c语言学生选课管理系统_学生选课系统C语言程序

Ⅰ 学生选课系统c语言程序

根据自己的需要，自己看着修改一下 ^^
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//课程信息结构体
{
int num1;
char name1[20];
int score;
int nelepeo;//课程已选人数
int Melepeo;//课程人数上限
struct couse * next;
};
struct student//学生信息结构体
{
int num2;
char name2[20];
int nelenum[50];//已选课程编号
int nelen;//已选课程数量
struct student * next;
};
void Ms()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//录入键盘子函数(从文件录入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct couse*)malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
head1=NULL;
while(!feof(fp))
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
}
p2->next=NULL;
}
void inputc()//录入课程主函数
{
int i;
printf("\t\t\t录入课程信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//课程管理子函数(增加课程)
{
struct couse *p0,*p1,*p2;
p1=head1;
p0=incouse;
if(head1==NULL)
{
head1=p0;
p0->next=NULL;
}
else
{
while((p0->num1 > p1->num1) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num1 <= p1->num1)
{
if(head1==p1) head1=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N1=N1+1;
}
void delc(int num1)//课程管理子函数(删除课程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n没有课程,无法删除!\n");
goto end;
}
p1=head1;
while(num1!=p1->num1 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num1==p1->num1)
{
if(p1==head1) head1=p1->next;
else p2->next=p1->next;
printf("已删除该编号课程!\n");
N1=N1-1;
}
else printf("无该编号的课程!\n");
end:;
}
void managementc()//课程管理主函数
{
struct couse * incouse;
int i,num1;
printf("\t\t\t课程管理\n");
printf("1.新增课程\n");
printf("2.删除课程\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("请输入要删除课程的编号:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//录入学生信息子函数（从键盘录入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("学生学号\t学生姓名\n");
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
head2=NULL;
while(p1->num2!=0)
{
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
}
p2->next=NULL;
}
void files()//录入学生信息子函数（从文件录入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct student*)malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
head2=NULL;
while(!feof(fp))
{
i=0;
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
}
p2->next=NULL;
}
void inputs()//录入学生信息主函数
{
int i;
printf("\t\t\t录入学生信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//学生信息管理子函数(填加学生信息)
{
struct student *p0,*p1,*p2;
p1=head2;
p0=incouse;
if(head2==NULL)
{
head2=p0;
p0->next=NULL;
}
else
{
while((p0->num2 > p1->num2) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num2 <= p1->num2)
{
if(head2==p1) head2=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N2=N2+1;
}
void dels(int num2)//学生信息管理子函数（删除学生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n没有该学生信息,无法删除!\n");
goto end;
}
p1=head2;
while(num2!=p1->num2 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num2==p1->num2)
{
if(p1==head2) head2=p1->next;
else p2->next=p1->next;
printf("已删除该学生信息!\n");
N2=N2-1;
}
else printf("无该学号的学生!\n");
end:;
}
void managements()//学生信息管理主函数
{
struct student * incouse;
int i,num2;
printf("\t\t\t学生信息管理\n");
printf("1.新增学生信息\n");
printf("2.删除学生信息\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct student *)malloc(sizeof(struct student));
incouse->nelen=0;
incouse->nelenum[0]=0;
printf("学生学号\t学生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("请输入要删除学生的学号:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//选课
{
struct couse * p;
int num1,i;
printf("请输入要选课的编号:\n");
scanf("%d",&num1);
for(i=0;s->nelenum[i]!=0;i++);
s->nelenum[i]=num1;
(s->nelen)++;
p=head1;
while(p->num1!=num1) p=p->next;
(p->nelepeo)++;
}
void cheak()//学生选课子函数(查询可选课程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("请输入你的学号:");
scanf("%d",&num2);
s=head2;
while(s->num2!=num2 && s->next!=NULL) s=s->next;
if(s->num2!=num2)
{
printf("不存在你的信息,请进入主菜单录入你的信息!\n");
goto end;
}
c=head1;
printf("你的可选课程编号:\n");
while(c!=NULL)
{
for(t=0,i=0;s->nelenum[i]!=0;i++)
{
if(c->num1==s->nelenum[i]) t=1;
}
if(t==0 && (c->nelepeo!=c->Melepeo))
{
printf("%d\n",c->num1);
j++;
}
c=c->next;
}
if(j==0)
{
printf("你已选完所有课程，无法再多选!\n");
goto end;
}
printf("选课(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("继续选课(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退课
{
struct couse * p1;
int num1,i,j;
printf("请输入你要退掉的课程编号:\n");
scanf("%d",&num1);
p1=head1;
while(p1->num1!=num1) p1=p1->next;
for(i=0;p->nelenum[i]!=num1;i++);
for(j=i;p->nelenum[j]!=0;j++) p->nelenum[j]=p->nelenum[j+1];
p->nelenum[--j]=0;
(p1->nelepeo)--;
printf("退课成功!\n");
}
void hcheak()//学生选课子函数（查询已选课程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("请输入学号:\n");
scanf("%d",&num2);
p=head2;
while(p->num2!=num2 && p!=NULL) p=p->next;
if(p==NULL)
{
printf("不存在你的信息,请回主菜单录入信息:\n");
goto end;
}
printf("已选课程编号:\n");
if(p->nelenum[0]==0)
{
printf("你还没选课!\n");
goto end;
}
for(i=0;p->nelenum[i]!=0;i++)
{
printf("%d\n",p->nelenum[i]);
p0=head1;
while(p0->num1!=p->nelenum[i]) p0=p0->next;
f=f+p0->score;
}
printf("总学分:%d\n",f);
printf("是否进行退课(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("继续退课(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//学生选课主函数
{
int i;
printf("\t\t\t学生选课\n");
printf("1.查询可选课程\n");
printf("2.查询已选课程\n");
printf("3.返回主菜单\n");
printf("请输入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//输出课程信息
{
struct couse * p;
p=head1;
printf("课程编号课程名称学分课程已选人数课程人数上限\n");
while(p!=NULL)
{
printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
}
void lists()//输出学生信息
{
struct student * p;
p=head2;
printf("学生学号学生姓名已选课程数量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存储课程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("输入课程信息要保存的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!");
exit(0);
}
p=head1;
while(p!=NULL)
{
fprintf(fp,"%d %s %d %d %d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
fclose(fp);
printf("课程信息已保存在%s中!\n",filepath);
}
void intos()//存储学生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("输入学生信息要保存的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("学生信息已保存在%s中!\n",filepath);
}
void into()//存储信息
{
int i;
printf("1.存储课程信息\n");
printf("2.存储学生信息\n");
printf("3.返回主菜单\n");
printf("请输入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函数
{
int i;
printf("\t\t系统信息查看及存储\n");
printf("1.查看课程信息\n");
printf("2.查看学生信息\n");
printf("3.存储信息\n");
printf("4.返回主菜单\n");
printf("请输入(1~4):\n");
scanf("%d",&i);
switch(i)
{
case(1):listc();break;
case(2):lists();break;
case(3):into();break;
case(4):break;
}
}
int main()//主函数
{
int i;
start:
printf("\n\t\t\t欢迎使用学生选课系统!\n");
printf("菜单:\n");
printf("1.录入课程信息\n");
printf("2.课程管理\n");
printf("3.录入学生信息\n");
printf("4.学生信息管理\n");
printf("5.学生选课\n");
printf("6.系统信息查看及存储\n");
printf("7.退出系统\n");
printf("\n请输入菜单选项(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("输入错误,请重输:\n");
goto start;
}
switch(i)
{
case(1):
{
system("cls");
inputc();
goto start;
break;
}
case(2):
{
system("cls");
managementc();
goto start;
break;
}
case(3):
{
system("cls");
inputs();
goto start;
break;
}
case(4):
{
system("cls");
managements();
goto start;
break;
}
case(5):
{
system("cls");
elective();
goto start;
break;
}
case(6):
{
system("cls");
store();
goto start;
break;
}
case(7):
{
system("cls");
printf("感谢使用本系统!\n\n再见!\n");
}
}
return(0);
}

Ⅱ c语言，编写学生选课系统代码，不要录入文件的

试试这个

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

struct Person
{
char score; /*编号*/
char name[10]; /*姓名*/
char address[10]; /*住址*/
char workplace[10]; /*单位*/
char num[8]; /*固定电话*/
char mobile[11]; /*移动号码*/
char sort[10]; /*分类*/
char Email[8]; /*E-mail*/
char QQ[10]; /*QQ*/

};

Person pe[80];

//登陆函数
void logon()
{printf("\n\n\n\t\t\t 通信录管理\n\n");
printf("\n\n\n\n\n\t\t\t 2014年7月\n\n");
printf("\t\t\t 程序设计\n");
system("pause");
}
int menu_select()
{ char c;
logon();
do{
system("cls");
printf("\t\t *****档案***** \n");
printf("\t\t┌───────┐\n");
printf("\t\t│ 1. 添加记录 │\n");
printf("\t\t 2. 删除记录 │\n");
printf("\t\t│ 3. 查询记录 │\n");
printf("\t\t│ 4. 修改记录 │\n");
printf("\t\t│ 5. 保存记录 │\n");
printf("\t\t│ 0. 退出程序 │\n");
printf("\t\t└───────┘\n");
printf("\t\t请您选择(0-5):");
c=getchar();
}while(c<'0'||c>'5');
return(c-'0');
}

int Input(Person per[],int n)
{
int i=0;
char sign,x[10];
while(sign!='n'&&sign!='N')
{
printf("\t编号:");
scanf("\t%d",&per[n+i].score);
printf("\t姓名:");
scanf("\t%s",per[n+i].name);
printf("\t电话号码:");
scanf("\t%s",per[n+i].num);
printf("\t单位:");
scanf("\t%s",per[n+i].workplace);
printf("\tE-mail:");
scanf("\t%s",per[n+i].Email);
printf("\t住址:");
scanf("\t%s",per[n+i].address);
printf("\t移动手机:");
scanf("\t%s",per[n+i].mobile);
printf("\tQQ:");
scanf("\t%s",per[n+i].QQ);
printf("\t所属类别:");
scanf("\t%s",per[n+i].sort);
gets(x);
printf("\n\t是否继续添加?(Y/N)");
scanf("\t%c",&sign);
i++;
} //插入学生信息，插入一条学生信息之后，执行i++，继续执行插入，直到不满足循环条件
return(n+i);
}

int Delete_a_record(Person per[],int n)
{
char s[20];
int i=0,j;
printf("\t请输入想删除记录中的名字:");
scanf("%s",s);
while(strcmp(per[i].name,s)!=0&&i<n)
i++;
if(i==n)
{
printf("\t通讯录中没有此人!\n");
return(n);
}
for(j=i;j<n-1;j++)
{
strcpy(per[j].num,per[j+1].num);
strcpy(per[j].name,per[j+1].name);
strcpy(per[j].workplace,per[j+1].workplace);
strcpy(per[j].Email,per[j+1].Email);
strcpy(per[j].address,per[j+1].address);
strcpy(per[j].QQ,per[j+1].QQ);
strcpy(per[j].mobile,per[j+1].mobile);
strcpy(per[j].sort,per[j+1].sort);
per[j].score=per[j+1].score;

} //删除一条信息后，其后面的信息都要向前移一位
printf("\t\t\t已经成功删除!\n");
return(n-1);
}
//查询一条记录
void Query_a_record(Person per[],int n)
{

int m;
printf("\t\n请选择查询方式:\n");
printf("\t┌─────- ┐\n");
printf("\t│1------姓名 │\n");
printf("\t│2------单位 │\n");
printf("\t│3------分类 │\n");
printf("\t│4------返回 │\n");
printf("\t└──────┘\n");
printf("请选择:");
scanf("%d",&m);
while(m!=1&&m!=2&&m!=3&&m!=4)
{
printf("输入错误，请重新选择:");
scanf("%d",&m);
}

if(m==1)
{
char s[20];
int i=0;
printf("\t请输入想查询的姓名:");
scanf("\t%s",s);
while(strcmp(per[i].name,s)!=0&&i<n) i++;
if(i==n)
{
printf("\t档案中没有此人!\n");
return;
}
printf("\t此人编号: %d\n",per[i].score);
printf("\t固定电话: %s\n",per[i].num);
printf("\t单位: %s\n",per[i].workplace);
printf("\tE-mail: %s\n",per[i].Email);
printf("\t此人QQ: %s\n",per[i].QQ);
printf("\t此人手机号: %s\n",per[i].mobile);
printf("\t此人分类: %s\n",per[i].sort);
} ;

if(m==2)
{
char s[20];
int i=0,k=0;
printf("\t请输入想查询的单位:");
scanf("\t%s",s);
for(i=0;i<n;i++){
if(strcmp(per[i].workplace,s)==0){
printf("\t此人编号: %d\n",per[i].score);
printf("\t姓名: %s\n",per[i].name);
printf("\t固定电话: %s\n",per[i].num);
printf("\tE-mail: %s\n",per[i].Email);
printf("\t此人QQ: %s\n",per[i].QQ);
printf("\t此人手机号: %s\n",per[i].mobile);
printf("\t此人分类: %s\n",per[i].sort);
printf("\n\n");
}

else
k++;
}
if(k==n)
{
printf("\t档案中没有此人!\n");
return;
}

} ;

if(m==3)
{
char s[20];
int i=0,k=0;
printf("\t请输入想查询的分类:");
scanf("\t%s",s);
for(i=0;i<n;i++){
if(strcmp(per[i].sort,s)==0){
printf("\t此人编号: %d\n",per[i].score);
printf("\t姓名: %s\n",per[i].name);
printf("\t固定电话: %s\n",per[i].num);
printf("\tE-mail: %s\n",per[i].Email);
printf("\t此人QQ: %s\n",per[i].QQ);
printf("\t此人手机号: %s\n",per[i].mobile);
printf("\t此人单位: %s\n",per[i].sort);
printf("\n\n");
}

else
k++;
}
if(k==n)
{
printf("\t档案中没有此人!\n");
return;
}

} ;
}
//修改记录
void Change(Person per[],int n)
{
char s[20];
int i=0;
printf("\t请输入想修改的记录中的名字:");
scanf("%s",s);
while(strcmp(per[i].name,s)!=0&&i<n)
i++;
if(i==n)
{
printf("\t档案中没有此人!\n");
return;
}
printf("\t编号:");
scanf("\t%d",&per[i].score);
printf("\t姓名:");
scanf("\t%s",per[i].name);
printf("\t电话号码:");
scanf("\t%s",per[i].num);
printf("\t单位:");
scanf("\t%s",per[i].workplace);
printf("\tE-mail:");
scanf("\t%s",per[i].Email);
printf("\t住址:");
scanf("\t%s",per[i].address);
printf("\t移动手机:");
scanf("\t%s",per[i].mobile);
printf("\t所属类别:");
scanf("\t%s",per[i].sort);
printf("\t修改成功！");
}
//写入文件
void WritetoText(Person per[],int n)
{
int i=0;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t保存到文件\n"); /*输入文件名*/
printf("\t请输入所保存的文件名:");
scanf("\t%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("\t无法打开文件\n");
system("pause");
return;
}
fprintf(fp,"******************************************通讯录******************************************\n");
fprintf(fp,"编号姓名电话号码通信地址电子邮箱\n");
fprintf(fp,"------------------------------------------------------------------------------------------\n");
while(i<n)
{
fprintf(fp,"%-3d\t%-6s\t%-13s\t%-20s\t%-20s\n",per[i].score,per[i].name,per[i].num,per[i].workplace,per[i].Email);
i++;
}
fprintf(fp,"------------------------------------------------------------------------------------------\n");
fprintf(fp,"***************************************共有%d条记录****************************************\n",n);
fclose(fp); /*关闭文件*/
printf("保存成功!\n");
}

/* 主函数*/
int main()
{
int n=0;
for(;;)
{
switch(menu_select())
{
case 1:
printf("\n\t添加记录到档案\n");
n=Input(pe,n);
break;

case 2:
printf("\n\t从档案中删除记录\n");
n=Delete_a_record(pe,n);
printf("\t");
system("pause");
break;

case 3:
printf("\n\t在档案中查找记录\n");
Query_a_record(pe,n);
printf("\t");
system("pause");
break;

case 4:
printf("\n\t修改档案中的记录\n");
Change(pe,n);
printf("\t");
system("pause");
break;

case 5:
printf("\n\t保存功能\n");
WritetoText(pe,n);
printf("\t");
system("pause");
break;

case 0:
printf("\n\t\t谢谢使用，再见!\n");
printf("\n\t\t");
system("pause");
exit(0); //退出程序
}
}
}

Ⅲ 学生选课管理系统要求用c语言编写最好不要用到链表

/*你把所有标记为“选题”的内容改为“选课”即可，用的不是链表，是随机文件*/
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define szSTR 256
#define szNAME 10
#define szGROUP 5 /*每个小组最多允许5名组员，包括组长*/
#define fileAssignments "c:\\0.txt"
#define fileProjects "c:\\1.txt"
#define cntTYPE 4
/*题目*/
char Types[cntTYPE][11] = {"数据结构类", "趣味类", "管理类", "自选类"};
struct TAssignment {
int number; /*题目编号*/
int level; /*难度系数*/
int type; /*类别*/
char title[szSTR];
char requirements[szSTR]; /*技术要求*/
char features[szSTR]; /*技术特点*/
};

time_t Date_Input(char * msg)
{
struct tm t; memset(&t, 0, sizeof(t));
printf("请输入%s日期，格式为年/月/日：", msg);
scanf("%d/%d/%d", &(t.tm_year), &(t.tm_mon), &(t.tm_mday));
t.tm_year -= 1900;
t.tm_mon --;
return mktime(&t);
}

void Date_Print(time_t t)
{
struct tm * ft = localtime(&t);
printf("%04d/%02d/%02d", ft->tm_year + 1900, ft->tm_mon + 1, ft->tm_mday);
}

void Number_Input(char * msg, int * x)
{
for(;;) {
printf("请输入%s，以回车结束：", msg);
scanf("%d", x);
if(*x < 0) *x = -*x;
if(*x) break;
printf("错误的输入，请重新输入。\n");
}
}
void String_Input(char * msg, char * str)
{
printf("请输入%s，以回车结束：", msg);
fflush(stdin);
fgets(str, szSTR, stdin);
}

int Type_Input(void)
{
int t = 0, i = 0;
for(;;) {
printf("请输入题目类别：");
for(i = 0; i < cntTYPE; i++) printf("%d - %s\t", i, Types[i]);
printf("\b\n");
t = getch() - '0';
if(t >= 0 && t <= cntTYPE) break;
printf("错误的输入\n");
}
return t;
}

fpos_t ASSG_Query(int number)
{
FILE * f = 0; fpos_t p = 0;
struct TAssignment a;
if(number < 1) return 0;
f = fopen(fileAssignments, "rb");
if(!f) {
fprintf(stderr, "题目文件无法打开\n");
return 0;
}
while(!feof(f)) {
fgetpos(f, &p);
fread(&a, sizeof(a), 1, f);
if(a.number == number) {
fclose(f);
return p + 1;
}
}
fclose(f);
return 0;
}

void ASSG_Append(void)
{
FILE * f = 0; fpos_t p = 0;
struct TAssignment a;
memset(&a, 0, sizeof(a));
Number_Input("题目编号", &(a.number ));
p = ASSG_Query(a.number );
if(p) {
fprintf(stderr, "该题目已存在。\n");
return ;
}
Number_Input("难度系数", &(a.level));
String_Input("题目名称", a.title );
a.type = Type_Input();
String_Input("技术要求", a.requirements);
String_Input("技术特点", a.features);
f = fopen(fileAssignments, "ab");
if(!f) {
fprintf(stderr, "题目文件无法打开\n");
return ;
}
fwrite(&a, sizeof(a), 1, f);
fclose(f);
}

void ASSG_Delete(void)
{
fpos_t p = 0; FILE * f = 0;
struct TAssignment a;
Number_Input("题目编号", &(a.number ));
p = ASSG_Query(a.number );
if(p == 0) {
fprintf(stderr, "该题目不存在。\n");
return ;
}
p--;
f = fopen(fileAssignments, "rb+");
if(!f) {
fprintf(stderr, "题目文件无法打开！\n");
return ;
}
fsetpos(f, &p);
memset(&a, 0, sizeof(a));
fwrite(&a, sizeof(a), 1, f);
fclose(f);
printf("删除成功！\n");
}

void PrintLine(void)
{
int i = 0; for(i=0; i<79; i++) putchar('-');
putchar('\n');
}
void ASSG_Report(void)
{
FILE * f = 0; struct TAssignment a; int r = 0;
f = fopen(fileAssignments, "rb");
if(!f) {
fprintf(stderr, "目前数据库中没有题目。\n");
return ;
}
printf("\n题目数据库\n");
while(!feof(f)) {
r = fread(&a, sizeof(a), 1, f);
if(r < 1) break;
if(a.number == 0) continue;
PrintLine();
printf("【编号】%d\t【类别】%s\t【难度系数】%d\t【题目】%s【技术要求】%s【技术特点】%s",
a.number , Types[a.type ], a.level ,
a.title , a.requirements , a.features );
}
fclose(f);
printf("\n\n");
}

void ASSG_Brief(int number)
{
struct TAssignment a; FILE * f = 0;
fpos_t p = ASSG_Query(number);
if(!p) {
printf("【尚未选题】\n");
return ;
}
p--;
f = fopen(fileAssignments, "rb");
fsetpos(f, &p);
fread(&a, sizeof(a), 1, f);
fclose(f);
printf("【题目编号】%d【类别】%s【难度系数】%d\t【题目】%s",
a.number , Types[a.type ], a.level ,a.title );
}

int ASSG_Choose(void)
{
int number = 0; fpos_t p = 0;
Number_Input("题目编号", &number);
p = ASSG_Query(number);
return p?number:0;
}
void ASSG_Menu(void)
{
int cmd = 0;
for(;;) {
printf("*****题目管理*****\n0-查看\t1-新增\t2-删除题目\t任意键返回\n");
cmd = getch() - '0';
switch(cmd) {
case 0: ASSG_Report(); break;
case 1: ASSG_Append(); break;
case 2: ASSG_Delete(); break;
default: return ;
}
}
}

/*项目信息*/
struct TProject {
int group_number; /*组号*/
char members[szGROUP][szNAME]; /*小组成员，编号0为组长*/
int assignment; /*选题*/
time_t date_open; /*开题日期*/
time_t date_close; /*结题日期*/
char teacher[szNAME];/*指导教师*/
int process; /*进度0~100%*/
char jobs[szSTR]; /*分工*/
int score; /*评分*/
};

void PROJ_Report(void)
{
struct TProject p; int r = 0;
FILE * f = fopen(fileProjects, "rb");
if(!f) {
fprintf(stderr, "目前没有开放项目信息。\n");
return;
}
printf("*****项目及小组信息*****\n");
while(!feof(f)) {
r = fread(&p, sizeof(p), 1, f);
if(r < 1) break;
if(p.group_number ==0) continue;
PrintLine();
printf("【组号】%d\t【指导教师】%s【组长】%s\n",
p.group_number , p.teacher , p.members[0]);
printf("【组员】%s %s %s %s\n", p.members[1], p.members[2], p.members[3], p.members[4]);
printf("【分工】%s", p.jobs );
ASSG_Brief(p.assignment );
if(p.assignment ) {
printf("【开题日期】"); Date_Print(p.date_open);
printf("【结题日期】"); Date_Print(p.date_close);
printf("【进度】%d%%【评分】%d\n", p.process, p.score );
}
}
fclose(f);
PrintLine();
}

fpos_t PROJ_Query(int number)
{
struct TProject p; fpos_t q = 0; int r = 0;
FILE * f = fopen(fileProjects, "rb");
if(!f) return 0;
while(!feof(f)) {
fgetpos(f, &q);
r = fread(&p, sizeof(p), 1, f);
if(r < 1) break;
if(p.group_number == number) {
fclose(f);
return q+1;
}
}
fclose(f);
return 0;
}

void PROJ_Append(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0; int i = 0;
memset(&p, 0, sizeof(p));
Number_Input("项目小组编号", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q) {
fprintf(stderr, "该小组已经存在。\n");
return ;
}
printf("请录入组员信息，第一个组员是组长：");
for(i = 0; i< 5; i++) scanf("%s", p.members [i]);
printf("请输入指导教师姓名："); scanf("%s", p.teacher );
String_Input("分工信息", p.jobs );
f = fopen(fileProjects, "ab");
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("项目小组已创建，可以从菜单进行选题。\n");
}

void PROJ_Delete(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0;
memset(&p, 0, sizeof(p));
Number_Input("项目小组编号", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "没有关于该小组的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("该小组信息已删除！\n");
}

int PROJ_Invalid(int assignment)
{
struct TProject p; int sum = 0; int r = 0;
FILE * f = fopen(fileProjects, "rb");
if(!f) return 1;
while(!feof(f)) {
r = fread(&p, sizeof(p), 1, f);
if(r < 1) break;
if(p.group_number == 0) continue;
if(p.assignment == assignment) sum++;
}
fclose(f);
return sum<5?0:1;
}
void PROJ_Select(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0; time_t t = 0;
memset(&p, 0, sizeof(p));
Number_Input("项目小组编号", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "没有关于该小组的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb");
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fread(&p, sizeof(p), 1, f);
fclose(f);
p.assignment = ASSG_Choose();
if(p.assignment==0) {
fprintf(stderr, "错误的题目编号。请在题库中查证后重新选题\n");
return ;
}
if(PROJ_Invalid(p.assignment)) {
fprintf(stderr, "已经有5个小组选择了该题目，请重新选题\n");
return ;
}
p.date_open = Date_Input("开题");
p.date_close= Date_Input("结题");
if(p.date_open > p.date_close) {
t = p.date_close ;
p.date_close = p.date_open;
p.date_open = t;
}
p.process = 0;
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
fwrite(&p, sizeof(p), 1, f);
fclose(f);
}

void PROJ_Progress(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0;
memset(&p, 0, sizeof(p));
Number_Input("项目小组编号", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "没有关于该小组的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb");
if(!f) {
fprintf(stderr, "数据库无记录!\n");
return ;
}
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fread(&p, sizeof(p), 1, f);
fclose(f);
if(p.assignment < 1) {
fprintf(stderr, "尚未选题，请选题后再补登进度\n");
return ;
}
Number_Input("进度（0~100）", &(p.process ));
if(p.process <0 || p.process > 100) {
fprintf(stderr, "错误的进度\n");
return ;
}
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("进度已经登记完成！\n");
}

void PROJ_Evaluate(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0;
memset(&p, 0, sizeof(p));
Number_Input("项目小组编号", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "没有关于该小组的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb");
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fread(&p, sizeof(p), 1, f);
fclose(f);
if(p.assignment < 1) {
fprintf(stderr, "尚未选题，请选题后再进行评分\n");
return ;
}
Number_Input("评分（0~100）", &(p.score ));
if(p.score <0 || p.score > 100) {
fprintf(stderr, "错误的评分\n");
return ;
}
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("成绩已经评定完成！\n");
}

void PROJ_Menu(void)
{
int cmd = 0;
for(;;) {
printf("*****项目管理*****\n0-查看\t1-新增\t2-删除\t3-选题\t4-登记进度\t5-打分\t任意键返回\n");
cmd = getch() - '0';
switch(cmd) {
case 0: PROJ_Report(); break;
case 1: PROJ_Append(); break;
case 2: PROJ_Delete(); break;
case 3: PROJ_Select(); break;
case 4: PROJ_Progress(); break;
case 5: PROJ_Evaluate(); break;
default: return ;
}
}
}

int main(void)
{
int cmd = 0;
for(;;) {
printf("*****欢迎使用学生实践管理软件*****\n0-题目管理\n1-项目管理\n其他任意键退出\n");
cmd = getch() - '0';
switch(cmd) {
case 0: ASSG_Menu(); break;
case 1: PROJ_Menu(); break;
default: return 0;
}
}
return 0;
}

Ⅳ 急求c语言：学生选课系统程序设计（最好含流程图的）

#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//课程信息结构体
{
int num1;
char name1[20];
int score;
int nelepeo;//课程已选人数
int Melepeo;//课程人数上限
struct couse * next;
};
struct student//学生信息结构体
{
int num2;
char name2[20];
int nelenum[50];//已选课程编号
int nelen;//已选课程数量
struct student * next;
};
void Ms()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//录入键盘子函数(从文件录入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct couse*)malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
head1=NULL;
while(!feof(fp))
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
}
p2->next=NULL;
}
void inputc()//录入课程主函数
{
int i;
printf("\t\t\t录入课程信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//课程管理子函数(增加课程)
{
struct couse *p0,*p1,*p2;
p1=head1;
p0=incouse;
if(head1==NULL)
{
head1=p0;
p0->next=NULL;
}
else
{
while((p0->num1 > p1->num1) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num1 <= p1->num1)
{
if(head1==p1) head1=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N1=N1+1;
}
void delc(int num1)//课程管理子函数(删除课程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n没有课程,无法删除!\n");
goto end;
}
p1=head1;
while(num1!=p1->num1 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num1==p1->num1)
{
if(p1==head1) head1=p1->next;
else p2->next=p1->next;
printf("已删除该编号课程!\n");
N1=N1-1;
}
else printf("无该编号的课程!\n");
end:;
}
void managementc()//课程管理主函数
{
struct couse * incouse;
int i,num1;
printf("\t\t\t课程管理\n");
printf("1.新增课程\n");
printf("2.删除课程\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("请输入要删除课程的编号:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//录入学生信息子函数（从键盘录入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("学生学号\t学生姓名\n");
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
head2=NULL;
while(p1->num2!=0)
{
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
}
p2->next=NULL;
}
void files()//录入学生信息子函数（从文件录入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("输入要读入的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct student*)malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
head2=NULL;
while(!feof(fp))
{
i=0;
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
}
p2->next=NULL;
}
void inputs()//录入学生信息主函数
{
int i;
printf("\t\t\t录入学生信息\n");
printf("\n1.从键盘录入\n");
printf("2.从文件录入\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//学生信息管理子函数(填加学生信息)
{
struct student *p0,*p1,*p2;
p1=head2;
p0=incouse;
if(head2==NULL)
{
head2=p0;
p0->next=NULL;
}
else
{
while((p0->num2 > p1->num2) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num2 <= p1->num2)
{
if(head2==p1) head2=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N2=N2+1;
}
void dels(int num2)//学生信息管理子函数（删除学生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n没有该学生信息,无法删除!\n");
goto end;
}
p1=head2;
while(num2!=p1->num2 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num2==p1->num2)
{
if(p1==head2) head2=p1->next;
else p2->next=p1->next;
printf("已删除该学生信息!\n");
N2=N2-1;
}
else printf("无该学号的学生!\n");
end:;
}
void managements()//学生信息管理主函数
{
struct student * incouse;
int i,num2;
printf("\t\t\t学生信息管理\n");
printf("1.新增学生信息\n");
printf("2.删除学生信息\n");
printf("3.返回主菜单\n");
printf("请选择(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct student *)malloc(sizeof(struct student));
incouse->nelen=0;
incouse->nelenum[0]=0;
printf("学生学号\t学生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("请输入要删除学生的学号:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//选课
{
struct couse * p;
int num1,i;
printf("请输入要选课的编号:\n");
scanf("%d",&num1);
for(i=0;s->nelenum[i]!=0;i++);
s->nelenum[i]=num1;
(s->nelen)++;
p=head1;
while(p->num1!=num1) p=p->next;
(p->nelepeo)++;
}
void cheak()//学生选课子函数(查询可选课程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("请输入你的学号:");
scanf("%d",&num2);
s=head2;
while(s->num2!=num2 && s->next!=NULL) s=s->next;
if(s->num2!=num2)
{
printf("不存在你的信息,请进入主菜单录入你的信息!\n");
goto end;
}
c=head1;
printf("你的可选课程编号:\n");
while(c!=NULL)
{
for(t=0,i=0;s->nelenum[i]!=0;i++)
{
if(c->num1==s->nelenum[i]) t=1;
}
if(t==0 && (c->nelepeo!=c->Melepeo))
{
printf("%d\n",c->num1);
j++;
}
c=c->next;
}
if(j==0)
{
printf("你已选完所有课程，无法再多选!\n");
goto end;
}
printf("选课(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("继续选课(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退课
{
struct couse * p1;
int num1,i,j;
printf("请输入你要退掉的课程编号:\n");
scanf("%d",&num1);
p1=head1;
while(p1->num1!=num1) p1=p1->next;
for(i=0;p->nelenum[i]!=num1;i++);
for(j=i;p->nelenum[j]!=0;j++) p->nelenum[j]=p->nelenum[j+1];
p->nelenum[--j]=0;
(p1->nelepeo)--;
printf("退课成功!\n");
}
void hcheak()//学生选课子函数（查询已选课程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("请输入学号:\n");
scanf("%d",&num2);
p=head2;
while(p->num2!=num2 && p!=NULL) p=p->next;
if(p==NULL)
{
printf("不存在你的信息,请回主菜单录入信息:\n");
goto end;
}
printf("已选课程编号:\n");
if(p->nelenum[0]==0)
{
printf("你还没选课!\n");
goto end;
}
for(i=0;p->nelenum[i]!=0;i++)
{
printf("%d\n",p->nelenum[i]);
p0=head1;
while(p0->num1!=p->nelenum[i]) p0=p0->next;
f=f+p0->score;
}
printf("总学分:%d\n",f);
printf("是否进行退课(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("继续退课(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//学生选课主函数
{
int i;
printf("\t\t\t学生选课\n");
printf("1.查询可选课程\n");
printf("2.查询已选课程\n");
printf("3.返回主菜单\n");
printf("请输入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//输出课程信息
{
struct couse * p;
p=head1;
printf("课程编号课程名称学分课程已选人数课程人数上限\n");
while(p!=NULL)
{
printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
}
void lists()//输出学生信息
{
struct student * p;
p=head2;
printf("学生学号学生姓名已选课程数量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存储课程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("输入课程信息要保存的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!");
exit(0);
}
p=head1;
while(p!=NULL)
{
fprintf(fp,"%d %s %d %d %d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
fclose(fp);
printf("课程信息已保存在%s中!\n",filepath);
}
void intos()//存储学生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("输入学生信息要保存的文件路径:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("学生信息已保存在%s中!\n",filepath);
}
void into()//存储信息
{
int i;
printf("1.存储课程信息\n");
printf("2.存储学生信息\n");
printf("3.返回主菜单\n");
printf("请输入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函数
{
int i;
printf("\t\t系统信息查看及存储\n");
printf("1.查看课程信息\n");
printf("2.查看学生信息\n");
printf("3.存储信息\n");
printf("4.返回主菜单\n");
printf("请输入(1~4):\n");
scanf("%d",&i);
switch(i)
{
case(1):listc();break;
case(2):lists();break;
case(3):into();break;
case(4):break;
}
}
int main()//主函数
{
int i;
start:
printf("\n\t\t\t欢迎使用学生选课系统!\n");
printf("菜单:\n");
printf("1.录入课程信息\n");
printf("2.课程管理\n");
printf("3.录入学生信息\n");
printf("4.学生信息管理\n");
printf("5.学生选课\n");
printf("6.系统信息查看及存储\n");
printf("7.退出系统\n");
printf("\n请输入菜单选项(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("输入错误,请重输:\n");
goto start;
}
switch(i)
{
case(1):
{
system("cls");
inputc();
goto start;
break;
}
case(2):
{
system("cls");
managementc();
goto start;
break;
}
case(3):
{
system("cls");
inputs();
goto start;
break;
}
case(4):
{
system("cls");
managements();
goto start;
break;
}
case(5):
{
system("cls");
elective();
goto start;
break;
}
case(6):
{
system("cls");
store();
goto start;
break;
}
case(7):
{
system("cls");
printf("感谢使用本系统!\n\n再见!\n");
}
}
return(0);
}

Ⅳ c语言编写学生选课系统

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
//#include<iostream.h>
void clrscr(void)
{
system("cls");
}
char *getpass(char s[])
{
char *pass,ch;
int i;
pass=new char[100];
i=0;
pass[0]='\0';
printf("%s",s);
while(1)
{
ch=getch();
if(ch!=13)
{
printf("*");
pass[i]=ch;
i++;
pass[i]='\0';
}
else break;
}
//scanf("%s",pass);
return pass;
}
struct course
{
char name[20];
int score;
int students_limited;
course *pNext;
};

struct user
{
char name[20];
char password[17];
char coursename[20];
user *pNext;
};

int Login()
{
char key;

ST1:
clrscr();
printf("\n\n\n\n\n\n\n\t\t\tWelcome to Course System!");
printf("\n\n");
printf("\n\t\t\t1. Login with Administrator");
printf("\n\t\t\t2. Login with Users");
printf("\n\t\t\t0. Exit");
key=getch();

switch(key)
{
case '1' : return 1;
case '2' : return 2;
case '0' : return 0;
default : printf("\n\n\t\t\tInput wrong!\n\t\t\t\tPress any key to continue...");
getch();
goto ST1;
}
}

course *readcourse()
{
FILE *fp;
book *pHead,*pTemp,*pLast;

fp=fopen("coursemsg.dat","r");
if(fp==NULL)
{
printf("\n\n\t\t\tOpen course message file failed!");
return NULL;
}
pHead=NULL;
while(!feof(fp))
{
pTemp=new course;
if(fread(pTemp,sizeof(course),1,fp)!=1)
{
delete pTemp;
break;
}
if(pHead==NULL)
{
pHead=pTemp;
pLast=pTemp;
}
pLast->pNext=pTemp;
pTemp->pNext=NULL;
pLast=pTemp;
}//while
fclose(fp);
return pHead;
}

void writecoursetofile(course *pHead)
{
FILE *fp;
course *pTemp,*pNext;

fp=fopen("coursemsg.dat","w");
for(pTemp=pHead;pTemp;pTemp=pTemp->pNext)
fwrite(pTemp,sizeof(course),1,fp);
fclose(fp);
}

void Add_course()
{
course one,*p;
int i,j;
FILE *fp;

p=&one;
while(1)
{
clrscr();
printf("\n\n\n\n\n\n\n\n\t\tPlease input the name of course(-1 to end):");
//cin>>p->name;
scanf("%s",p->name);
if(!strcmp(p->name,"-1"))break;
i=0;
while(1)
{
if(p->name[i]=='\0')break;
else i++;
}
for(j=i;j<20;j++)p->name[j]='\0';
printf("\n\t\tInput it's scores:");
//cin>>p->score;
scanf("%d",&p->score);
fp=fopen("coursemsg.dat","a+");
fwrite(p,sizeof(course),1,fp);
fclose(fp);
printf("\n\n\t\tAdd course message OK!");
printf("\n\t\t\tPress any key to countinue...");
getch();
}
}

void Del_course()
{
course *pHead,*pNewHead,*pTemp,*pLast;
char name[20];

pHead=readcourse();
printf("\n\t\tPlease input the name of course to be delete:");
gets(name);

while(strcmp(pHead->name,name)==0)
{
pNewHead=pHead->pNext;
printf("\n\n\t\t--%s had been deleted" ,name);
delete pHead;
pHead=pNewHead;
}
for(pTemp=pHead,pLast=pHead;pTemp!=NULL;pLast=pTemp,pTemp=pTemp->pNext)
{
if(strcmp(pTemp->name,name)==0)
{
pLast->pNext=pTemp->pNext;
printf("\n\n\t\t--%s had been deleted" ,name);
delete pTemp;
pTemp=pLast;
}
}//for
writecoursetofile(pHead);
getch();
}

void course_Op()
{
char key;

ST3:
clrscr();
printf("\n\n\n\n\n\n\n\n\t\t\t\t1. Add Course");
printf("\n\t\t\t\t2. Delete Course");
printf("\n\t\t\t\t0. EXIT");
key=getch();
switch(key)
{
case '1' : Add_course();break;
case '2' : Del_course();break;
case '0' : goto _End;
default : printf("\n\tInput wrong!\n\tPress any key to continue...");
getch();
}
goto ST3;

_End:
;
}

void Add_user()
{
FILE *fp;
char name[20],*na,password[6],*pa;
int i,j;
user one,*p;

p=&one;
pa=password;
na=name;

while(1)
{
clrscr();
printf("\n\n\n\n\n\n\n\t\tPlease input user's name(-1 to end):");
gets(name);
if(!strcmp(name,"-1"))break;
pa=getpass("\n\t\tPlease input new password:");
strcpy(p->name,na);
strcpy(p->password,pa);
fp=fopen("usermsg.dat","ab+");
fwrite(p,sizeof(user),1,fp);
fclose(fp);
printf("\n\t\tuser's message has been saved!");
printf("\n\t\tPress any key to countinue...");
getch();
}
}
user *readcusmsg()
{
FILE *fp;
user *pHead,*pTemp,*pLast;

fp=fopen("usermsg.dat","rb");
if(fp==NULL)
{
printf("\n\nOpen user's message file failed");
return NULL;
}
pHead=NULL;

while(!feof(fp))
{
pTemp=new user;
if(fread(pTemp,sizeof(user),1,fp)!=1)
{
delete pTemp;
break;
}
if(pHead==NULL)
{
pHead=pTemp;
pLast=pTemp;
}
pLast->pNext=pTemp;
pTemp->pNext=NULL;
pLast=pTemp;
}//while
fclose(fp);
return pHead;
}

void writecusmsgtofile(user *pHead)
{
FILE *fp;
user *pTemp,*pNext;

fp=fopen("usermsg.dat","wb");
for(pTemp=pHead;pTemp;pTemp=pTemp->pNext)
fwrite(pTemp,sizeof(user),1,fp);
fclose(fp);
}

void user_Op()
{
char key;

ST4:
clrscr();
printf("\n\n\n\n\n\n\n\n\t\t\t\t1. Add Users");
printf("\n\t\t\t\t0. EXIT");
key=getch();

switch(key)
{
case '1' : Add_user();break;
case '0' : goto _End;
default : printf("\n\tInput wrong!\n\tPress any key to continue...");
getch();
}
goto ST4;

_End:;
}

void List_all_course()
{
course *pHead,*pTemp;
int Count=0,tense;

pHead=readcourse();
if(!pHead)
{
printf("\n\t(No data)");
exit(0);
}
printf("\n%30s%8s%10s","course name","Score","Tense");

for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
{
if(pTemp->n>0)tense=1;
else tense=0;
printf("\n%30s%8d%10d",pTemp->name,pTemp->score,tense);
Count++;
if(Count%20==0){printf("Press any key to countinue...");getch();}
}
getch();
}

void Search_course_name()
{
char name[20];
int tense,k=1;
book *pHead,*pTemp,*pNext;

printf("\n\tPlease input the name of the course you want to search:");
gets(name);
pHead=readcourse();
for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
if(!strcmp(pTemp->name,name))
{
if(pTemp->n>0)tense=1;
else tense=0;
k=0;
printf("\n%30s%8d%10d",pTemp->name,pTemp->score,tense);
}
if(k)
{
printf("\n\n\t\tThere's no course named %s",name);
printf("\n\t\t\tPress any key to countinue...");
}
getch();
}

void course_Search()
{
char key;

ST5:
clrscr();
printf("\n\n\n\n\n\n\t\t\t\t1. List all course");
printf("\n\t\t\t\t2. Search by the name of course");
printf("\n\t\t\t\t0. EXIT");
key=getch();

switch(key)
{
case '1' : List_all_course();break;
case '2' : Search_course_name();break;
case '0' : goto _End;
default : printf("\n\t\t\tInput wrong!\n\t\t\tPress any key to continue...");
getch();
}
goto ST5;

_End:;
}

void Pass(int Res)
{
FILE *fp;
char psw[17],*p,pass_in[17],user_name[20];
user *pHead,*pTemp;
int i,k=0;

clrscr();
p=pass;

if(Res==1)
{
if(!(fp=fopen("adm.psw","rb")))
{
printf("\n\n\n\n\n\n\n\t\tWelcome!\n\t******Login Administrator******");
p=getpass("\n\tPlease input your new password:");
fp=fopen("adm.psw","wb");
fprintf(fp,"%s",p);
fclose(fp);
}
else
{
fscanf(fp,"%s",pass_in);
fclose(fp);
printf("\n\n\n\n\n\n\t******Login by Administrator******");
p=getpass("\n\n\t\t\tPlease input your password:");
if(strcmp(p,pass_in))
{
printf("\n\t\tYour Password is wrong!");
printf("\n\t\tPress any key to EXIT...");
getch();
exit(0);
}//if_else
}
Adm_List();
}//if
else
{
printf("\n\n\n\n\n\n\n\n\t\t\t\tWelcome!");
printf("\n\t\t\t******Login by User******");
printf("\n\t\t\tPlease input your name:");
scanf("%s",user_name);
p=getpass("\n\t\t\tPlease input your password:");
pHead=reaser();
for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
if(!strcmp(pTemp->name,user_name))
if(strcmp(pTemp->password,p))
{
k=1;
printf("\n\t\t\tYour password is wrong!");
printf("\n\t\t\t\tPress any key to EXIT...");
getch();
exit(0);
}//if_else
}//psw

int main()
{
int Res;

clrscr();
printf("\n\n\n\n\n\n\n\n");
printf("\n\t*****************************************************************");
printf("\n\t* courses System *");
printf("\n\t* *");
printf("\n\t* QiuYong No.20052419 *");
printf("\n\t* *");
printf("\n\t* 2006-7-20 *");
printf("\n\t*****************************************************************");
printf("\n\t\t\t\t\t\tPress any key to countinue...");
getch();

START:
Res=login();
if(Res==0)goto End;
else if(Res==3)Help();
else Psw(Res);
goto START;

End:
clrscr();
printf("\n\n\n\n\n\n\t\t\tGoodBye ^_^");
return 0;
}

Ⅵ 用C语言写一个学生选课系统

Ⅶ c语言学生选修课程管理系统

#include <stdio.h>
#include <stdlib.h>
#include <string.h>struct student
{
char name[60];
char ID[7];
int score;
};int dq(struct student st[]);
void xianshi();
void bc(struct student st[]);
void add();
void select();
void zz();
void chazhao();
void xhcz();
void xmcz();
void del();
void xmsc();
void xhsc();
void tj();
void px();
void bjg();
void xg();
void xhxg();
void xmxg();
void bca();
void fh();
struct student st[300]; //这个数组用来保存所有的学生信息和文件里面的一致
int Number=0; //记录总的学生人数也就是数组/文件里面的学生人数
void main()
{
int choose=0;
FILE *fp=NULL;
char yesorno;

if((fp=fopen("C://student.dat","rb"))==NULL)
{
printf("\n=========>提示：文件不存在，是否要创建一个?(y/n)\n");
scanf("%c",&yesorno);
if(yesorno=='y'||yesorno=='Y')
{

//这里仅为了建立文件
fp=fopen("C://student.dat","wb");
fclose(fp);
}
else
exit(0);
}
else
{
Number=dq(st); //要是文件只能够已经有数据将数据初始化到数组中
}
system("cls");
while(true)
{
xianshi();
printf("\t\t====>请选择：");
scanf("%d",&choose);
system("cls");
switch(choose)
{
case 0: exit(0);
//退出
break;
case 1: add();
fh();//增加学生成绩
break;
case 2: select();
fh();//查看学生成绩
break;
case 3: chazhao();
fh();// 查找
break;
case 4: del();
fh();//删除
break;
case 5: tj();
fh();//统计
break;
case 6: px();
fh();//排序
break;
case 7: bjg();
fh();//输出不及格
break;
case 8: xg();
fh();//修改
break;
case 9:zz();
fh();//作者
break;
case 10:bca();
fh();//保存

break;
default:
break;
}
fflush(stdin);
getchar();
system("cls");
}
}
void bca()
{
printf("\t=====程序在运行时已自动保存.....\n");
}
void fh()
{
printf("\t===>按Enter键返回主菜单\n");
}
void xg() //修改学生信息
{
int way=0;
printf("请选择修改查找方式\n");
printf("1 按姓名查找修改\n");
printf("2 按学号查找修改\n");
scanf("%d",&way);
switch(way)
{
case 1: xmxg();
break;
case 2: xhxg();
break;
default: printf("输入有误，结束!\n");
break;
}
}
//按姓名修改
void xmxg()
{
FILE *fp=NULL;
char name[60];
int i=0;
int changeIndex=0;
int index=0;
printf("请输入要修改的学生姓名：");
scanf("%s",name);
for (i=0;i<Number;i++)
{
if (strcmp(name,st[i].name))
{
changeIndex=i; //保存要修改的人的下标
}
break;
}
printf("\t姓名\t学号\t成绩\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("请重新输入该学生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("学号：");
scanf("%s",st[changeIndex].ID);
printf("成绩：");
scanf("%d",&st[changeIndex].score); //信息修改后重新更新文件里面的数据以保持数据一致性
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
}
void xhxg()//按学号修改
{
FILE *fp=NULL;
char id[60];
int i=0;
int changeIndex=0;
int index=0;
printf("请输入要修改的学生学号：");
scanf("%s",id);
for (i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID))
{
changeIndex=i; //保存要修改的人的下标
}
break;
}
printf("\t姓名\t学号\t成绩\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("请重新输入该学生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("学号：");
scanf("%s",st[changeIndex].ID);
printf("成绩：");
scanf("%d",&st[changeIndex].score);

//信息修改后重新更新文件里面的数据以保持数据一致性
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("\t=======>修改成功\n");
}void bjg() //输出不及格人数
{
int i=0;
printf("以下是不及格:\n");
printf("\t姓名\t学号\t成绩\n");
for (i=0;i<Number;i++)
{
if (st[i].score<60)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void px()//排序
{
struct student temp;
int wantNUmber=0;
int i=0;
int j=0;
for(i=0;i<Number-1;i++)
{
for(j=i;j<Number-1;j++)
{
if(st[j].score>st[j+1].score)
{
temp=st[j];
st[j]=st[j+1];
st[j+1]=temp;
}
}
}
printf("你想输出前几名的成绩：");
scanf("%d",&wantNUmber);
if (wantNUmber>Number)
{
wantNUmber=Number;
} printf("\t姓名\t学号\t成绩\n");
for(i=0;i<wantNUmber;i++)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
void tj()//统计
{
int i=0;
double sum=0.0;
for(i=0;i<Number;i++)
{
sum+=st[i].score;
}
printf("全班总分为：%f\n",sum);
printf("平均分为：%f\n",sum/Number);
}
void del()//删除
{
int n=0;
printf("1 按姓名删除\n");
printf("2 按学号删除\n");
scanf("%d",&n);
switch(n)
{
case 1: xmsc();
break;
case 2: xhsc();
break;
}
}
void xmsc()//按姓名删除
{
FILE *fp=NULL;
char name[60];
int i=0;
int j=0;
printf("请输入要删除的学生姓名：");
scanf("%s",name);
for(i=0;i<Number;i++)
{
if (strcmp(name,st[i].name)==0) //如果查找到就删除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
} //将剩余数据写入文件重新一写的方式打开文件把以前的数据擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("删除成功;\n");

}
void xhsc()//按学号删除
{
FILE *fp=NULL;
char id[60];
int i=0;
int j=0;
printf("请输入要删除的学生学号：");
scanf("%s",id);
for(i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID)==0) //如果查找到就删除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
}

//将剩余数据写入文件重新一写的方式打开文件把以前的数据擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("删除成功;\n");
}
void chazhao()//查找学生
{
int n=0;
printf("1 按姓名查找\n");
printf("2 按学号查找\n");
scanf("%d",&n);
switch(n)
{
case 1: xmcz();
break;
case 2: xhcz();
break;
default: printf("输入有误，结束!\n");
break;
}
}
void xhcz()//按学号查找
{
char id[7];
int i=0;
printf("请输入要查找学生学号:");
scanf("%s",id);
system("cls");
printf("\t姓名\t学号\t成绩\n");
for (i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID)==0)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void xmcz()//按姓名查找
{
char name[7];
int i=0;
printf("请输入要查找学生姓名:");
scanf("%s",name);
system("cls");
printf("\t姓名\t学号\t成绩\n");
for (i=0;i<Number;i++)
{
if (strcmp(name,st[i].name)==0)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void zz()
{
printf("\t**********************************************************\n\n");
printf("\t^^^^^^^^^^ 武汉工程大学邮电与信息工程学院 ^^^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 07网络与安全管理2班 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^ 易樊制作 ^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 禁止CTRL+C 谢谢合作 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^^^ QQ:895115828\n\n");
printf("\t**********************************************************\n\n");
}
void select()//查看学生
{
int i=0;
printf("以下是全部学生成绩\n");
printf("\t姓名\t学号\t成绩\n");
for(i=0;i<Number;i++)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
void add()//增加学生
{
int numberTemp=0;
int i=0;
struct student temp; //临时保存信息
printf("请输入要增加学生成绩个数：");
scanf("%d",&numberTemp);
for(i=0;i<numberTemp;i++)
{
printf("输入第%d个同学信息\n",i+1);
printf("姓名：");
scanf("%s",temp.name);
printf("学号：");
scanf("%s",temp.ID);
printf("成绩：");
scanf("%d",&temp.score);
st[Number++]=temp; //将刚添加的写入到数组
bc(&temp); //将刚添加的写入到文件 }
printf("添加成功\n");
}
void bc(struct student *st)
{
FILE *fp=NULL;
fp=fopen("C://student.dat","ab+");
fwrite(st,sizeof(struct student),1,fp);
fclose(fp);
}
int dq(struct student st[])
{
FILE *fp=NULL;
int i=0;
fp=fopen("C://student.dat","rb");
while(fread(&st[i],sizeof(struct student),1,fp))
i++;
fclose(fp);
return i;
}
void xianshi()
{
printf("\t*****************************************************************\n");
printf("\t* *\n");
printf("\t* 学生成绩管理系统 *\n");
printf("\t* *\n");
printf("\t* [1] 增加学生成绩 [2] 查看学生成绩 *\n");
printf("\t* [3] 查找学生成绩 [4] 删除学生成绩 *\n");
printf("\t* [5] 统计（总成绩和平均分） [6] 输出前N名学生成绩 *\n");
printf("\t* [7] 输出不及格人数 [8] 修改学生信息 *\n");
printf("\t* [9] 关于作者 [10] 保存数据 *\n");
printf("\t* [0] 退出系统 *\n");
printf("\t*****************************************************************\n");
}运行成功，请你下去后慢慢研究下这个程序，很简单的，祝你成功！~
求采纳为满意回答。

Ⅷ c语言学生选课管理系统

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define LEN sizeof(struct course)
#define FORM "%d %s %s %d %d %d %d %d"
#define FORM1 "%5d%20s%20s%5d%5d%5d%5d%5d\n"
#define INPUT &p1->num,p1->name,p1->kind,&p1->all_time,&p1->class_time,&p1->experiment_time,&p1->grade,&p1->term
#define OUTPUT p1->num,p1->name,p1->kind,p1->all_time,p1->class_time,p1->experiment_time,p1->grade,p1->term
struct course
{int num;
char name[20];
char kind[10];
int all_time;
int class_time;
int experiment_time;
int grade;
int term;
//int flag;
struct course *next;};

void mune() //菜单函数
{
printf("************************************\n");
printf("如果录入信息，请选择1\n");
printf("如果浏览信息，请选择2\n");
printf("如果按学分查询课程，请选择3\n");
printf("如果按课程性质查询课程，请选择4\n");
printf("如果按选修课程查询，请选择5\n");
printf("如果想进行选课，请选择6\n");
printf("如果想退出，请选择0\n");
printf("*************************************\n");
}

struct course* scan(FILE*fp) //输入课程信息
{
struct course*head; //链表头指针
struct course*p1,*p2; //指示指针
int n=0;
p1=p2=(struct course*)malloc(LEN); //开辟内存空间
printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
printf("请输入数据：");
scanf(FORM,INPUT); //输入数据
fprintf(fp,FORM1,OUTPUT);
head=NULL;
while(p1->num!=0) //链表结束的判断条件
{n=n+1;
if(n==1)
head=p1; //当在第一个结点时，头指针等于第一个结点的首地址
else
p2->next=p1;
p2=p1;
p1=(struct course*)malloc(LEN); //继续开辟内存空间
printf("请输入数据：");
scanf("%ld",&p1->num); //输入课程号
if(p1->num!=0) //判断课程号是否为0，如果为0，程序结束
{scanf("%s %s %d %d %d %d %d",p1->name,p1->kind,&p1->all_time,&p1->class_time,&p1->experiment_time,&p1->grade,&p1->term);
//p1->flag=0;
fprintf(fp,FORM1,OUTPUT);}
}
p2->next=NULL; //最后一个结点的值为空
fclose(fp); //关闭文件
return(head); //返回头指针
}

void print(struct course*head) //将输入的内容显示在屏幕上
{
struct course*p1;
if(head!=NULL) //如果头指针为空，则程序结束
p1=head;
else
goto end;
printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
do
{printf(FORM1,OUTPUT); //输出内容
p1=p1->next; //指针指向下一个结点
}while(p1!=NULL);
end:;
}

void search_grade(struct course*head) //按学分查询课程
{
struct course*p1;
int k,n;
n=0;
p1=head;
printf("请输入查询课程的学分：\n");
scanf("%d",&k);
while(p1!=NULL) //根据链表里面的内容输出
{if(k==p1->grade)
{printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;}
if(n==0)
printf("无结果\n"); //如果没有课程，则输出无结果
}

void search_kind(struct course*head)//按课程性质查询
{
char a[10];
int n=0;
struct course*p1;
p1=head;
gets(a);
while(p1!=NULL)
{if(strcmp(a,p1->kind)==0) //用strcmp函数进行字符串的比较
{printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
printf(FORM1,OUTPUT); //如果相同，输出课程信息
n++;}
p1=p1->next;}
if(n==0)
printf("无结果\n");
}

void search_else(struct course*head) //查询所有选修课程
{
struct course*p1;
int n=0;
p1=head;
while(p1!=NULL)
{if(strcmp(p1->kind,"xuanxiu")==0)
{printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;
}
if(n==0)
printf("没有选修课程\n");
}

void choose(struct course*head) //选课函数
{
struct course*p1;
int k,s=0; //s为所选课程的学分总数，K为所选课程的课程编号
if(head!=NULL)
{p1=head;
while(s<60) //判断选课是否结束
{
p1=head;
printf("请输入选择课程的课程编号：");
scanf("%d",&k);
while(p1!=NULL) //当遍历一遍链表之后，循环结束
{
if(k==p1->num) //当找到对应的课程编号后，输出课程信息
{s=s+p1->grade;
printf("课程编号课程名称课程性质课程总学时教学用时实验用时学分开课学期\n");
printf(FORM1,OUTPUT);
printf("选课成功！\n");
break;}
else
p1=p1->next;
if(p1==NULL) //链表走到最后，则没有找到相应课程
printf("没有这门课程\n");
}
}
printf("学分达到要求\n");
}
}

void main()
{ struct course*head;
FILE*fp;
int k;
fp=fopen("课程list.txt","a+");
loop:mune(); //goto循环的开始位置
printf("请输入你的操作:\n");
scanf("%d",&k);
if(k!=0)
{switch(k) //利用switch语句实现菜单式工作
{case 1:head=scan(fp);break;
case 2:print(head);break;
case 3:search_grade(head);break;
case 4:search_kind(head);break;
case 5:search_else(head);break;
case 6:choose(head);break;
default:printf("操作不存在");}
goto loop;} //利用goto语句实现循环
}

自己做的，比较粗糙...用的头指针作为参数，所以只能一次性执行完~~~

Ⅸ C语言程序设计，学生选课系统

这是这几天我用C做的一个简易的学生选课系统.其实是我们的1道程序实践考试题,我想请大家看看,帮我提些建议.
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//课程信息结构体
{
int num1;
char name1[20];
int score;
int nelepeo;//课程已选人数
int Melepeo;//课程人数上限
struct couse * next;
};
struct student//学生信息结构体
{
int num2;
char name2[20];
int nelenum[50];//已选课程编号
int nelen;//已选课程数量
struct student * next;
};
void Ms()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("课程编号\t课程名称\t学分\t课程人数上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//录入键盘子函数(从文件录入)

Ⅹ C语言编写学生选课管理信息系统

你好，这个系统只需要打印这些信息吗？还是需要其他操作，如果只是打印的话不难。
你可以使用结构体或者数组来存放人员课程信息，然后打印功能就是循环输出数组信息就可以了
如果还有其他问题可以继续问我

c语言学生选课管理系统

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