c語言學生選課管理系統_學生選課系統C語言程序

Ⅰ 學生選課系統c語言程序

根據自己的需要，自己看著修改一下 ^^
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//課程信息結構體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數
int Melepeo;//課程人數上限
struct couse * next;
};
struct student//學生信息結構體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數量
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()//錄入課程子函數(從鍵盤錄入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\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()//錄入鍵盤子函數(從文件錄入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("輸入要讀入的文件路徑:");
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()//錄入課程主函數
{
int i;
printf("\t\t\t錄入課程信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//課程管理子函數(增加課程)
{
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)//課程管理子函數(刪除課程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n沒有課程,無法刪除!\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("已刪除該編號課程!\n");
N1=N1-1;
}
else printf("無該編號的課程!\n");
end:;
}
void managementc()//課程管理主函數
{
struct couse * incouse;
int i,num1;
printf("\t\t\t課程管理\n");
printf("1.新增課程\n");
printf("2.刪除課程\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("請輸入要刪除課程的編號:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//錄入學生信息子函數（從鍵盤錄入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("學生學號\t學生姓名\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()//錄入學生信息子函數（從文件錄入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("輸入要讀入的文件路徑:");
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()//錄入學生信息主函數
{
int i;
printf("\t\t\t錄入學生信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//學生信息管理子函數(填加學生信息)
{
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)//學生信息管理子函數（刪除學生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n沒有該學生信息,無法刪除!\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("已刪除該學生信息!\n");
N2=N2-1;
}
else printf("無該學號的學生!\n");
end:;
}
void managements()//學生信息管理主函數
{
struct student * incouse;
int i,num2;
printf("\t\t\t學生信息管理\n");
printf("1.新增學生信息\n");
printf("2.刪除學生信息\n");
printf("3.返回主菜單\n");
printf("請選擇(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("學生學號\t學生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("請輸入要刪除學生的學號:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//選課
{
struct couse * p;
int num1,i;
printf("請輸入要選課的編號:\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()//學生選課子函數(查詢可選課程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("請輸入你的學號:");
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,請進入主菜單錄入你的信息!\n");
goto end;
}
c=head1;
printf("你的可選課程編號:\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("你已選完所有課程，無法再多選!\n");
goto end;
}
printf("選課(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("繼續選課(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退課
{
struct couse * p1;
int num1,i,j;
printf("請輸入你要退掉的課程編號:\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("退課成功!\n");
}
void hcheak()//學生選課子函數（查詢已選課程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("請輸入學號:\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,請回主菜單錄入信息:\n");
goto end;
}
printf("已選課程編號:\n");
if(p->nelenum[0]==0)
{
printf("你還沒選課!\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("總學分:%d\n",f);
printf("是否進行退課(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("繼續退課(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//學生選課主函數
{
int i;
printf("\t\t\t學生選課\n");
printf("1.查詢可選課程\n");
printf("2.查詢已選課程\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//輸出課程信息
{
struct couse * p;
p=head1;
printf("課程編號課程名稱學分課程已選人數課程人數上限\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()//輸出學生信息
{
struct student * p;
p=head2;
printf("學生學號學生姓名已選課程數量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存儲課程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("輸入課程信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
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("課程信息已保存在%s中!\n",filepath);
}
void intos()//存儲學生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("輸入學生信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("學生信息已保存在%s中!\n",filepath);
}
void into()//存儲信息
{
int i;
printf("1.存儲課程信息\n");
printf("2.存儲學生信息\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函數
{
int i;
printf("\t\t系統信息查看及存儲\n");
printf("1.查看課程信息\n");
printf("2.查看學生信息\n");
printf("3.存儲信息\n");
printf("4.返回主菜單\n");
printf("請輸入(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()//主函數
{
int i;
start:
printf("\n\t\t\t歡迎使用學生選課系統!\n");
printf("菜單:\n");
printf("1.錄入課程信息\n");
printf("2.課程管理\n");
printf("3.錄入學生信息\n");
printf("4.學生信息管理\n");
printf("5.學生選課\n");
printf("6.系統信息查看及存儲\n");
printf("7.退出系統\n");
printf("\n請輸入菜單選項(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("輸入錯誤,請重輸:\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("感謝使用本系統!\n\n再見!\n");
}
}
return(0);
}

Ⅱ c語言，編寫學生選課系統代碼，不要錄入文件的

試試這個

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

struct Person
{
char score; /*編號*/
char name[10]; /*姓名*/
char address[10]; /*住址*/
char workplace[10]; /*單位*/
char num[8]; /*固定電話*/
char mobile[11]; /*移動號碼*/
char sort[10]; /*分類*/
char Email[8]; /*E-mail*/
char QQ[10]; /*QQ*/

};

Person pe[80];

//登陸函數
void logon()
{printf("\n\n\n\t\t\t 通信錄管理\n\n");
printf("\n\n\n\n\n\t\t\t 2014年7月\n\n");
printf("\t\t\t 程序設計\n");
system("pause");
}
int menu_select()
{ char c;
logon();
do{
system("cls");
printf("\t\t *****檔案***** \n");
printf("\t\t┌───────┐\n");
printf("\t\t│ 1. 添加記錄 │\n");
printf("\t\t 2. 刪除記錄 │\n");
printf("\t\t│ 3. 查詢記錄 │\n");
printf("\t\t│ 4. 修改記錄 │\n");
printf("\t\t│ 5. 保存記錄 │\n");
printf("\t\t│ 0. 退出程序 │\n");
printf("\t\t└───────┘\n");
printf("\t\t請您選擇(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編號:");
scanf("\t%d",&per[n+i].score);
printf("\t姓名:");
scanf("\t%s",per[n+i].name);
printf("\t電話號碼:");
scanf("\t%s",per[n+i].num);
printf("\t單位:");
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移動手機:");
scanf("\t%s",per[n+i].mobile);
printf("\tQQ:");
scanf("\t%s",per[n+i].QQ);
printf("\t所屬類別:");
scanf("\t%s",per[n+i].sort);
gets(x);
printf("\n\t是否繼續添加?(Y/N)");
scanf("\t%c",&sign);
i++;
} //插入學生信息，插入一條學生信息之後，執行i++，繼續執行插入，直到不滿足循環條件
return(n+i);
}

int Delete_a_record(Person per[],int n)
{
char s[20];
int i=0,j;
printf("\t請輸入想刪除記錄中的名字:");
scanf("%s",s);
while(strcmp(per[i].name,s)!=0&&i<n)
i++;
if(i==n)
{
printf("\t通訊錄中沒有此人!\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;

} //刪除一條信息後，其後面的信息都要向前移一位
printf("\t\t\t已經成功刪除!\n");
return(n-1);
}
//查詢一條記錄
void Query_a_record(Person per[],int n)
{

int m;
printf("\t\n請選擇查詢方式:\n");
printf("\t┌─────- ┐\n");
printf("\t│1------姓名 │\n");
printf("\t│2------單位 │\n");
printf("\t│3------分類 │\n");
printf("\t│4------返回 │\n");
printf("\t└──────┘\n");
printf("請選擇:");
scanf("%d",&m);
while(m!=1&&m!=2&&m!=3&&m!=4)
{
printf("輸入錯誤，請重新選擇:");
scanf("%d",&m);
}

if(m==1)
{
char s[20];
int i=0;
printf("\t請輸入想查詢的姓名:");
scanf("\t%s",s);
while(strcmp(per[i].name,s)!=0&&i<n) i++;
if(i==n)
{
printf("\t檔案中沒有此人!\n");
return;
}
printf("\t此人編號: %d\n",per[i].score);
printf("\t固定電話: %s\n",per[i].num);
printf("\t單位: %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此人手機號: %s\n",per[i].mobile);
printf("\t此人分類: %s\n",per[i].sort);
} ;

if(m==2)
{
char s[20];
int i=0,k=0;
printf("\t請輸入想查詢的單位:");
scanf("\t%s",s);
for(i=0;i<n;i++){
if(strcmp(per[i].workplace,s)==0){
printf("\t此人編號: %d\n",per[i].score);
printf("\t姓名: %s\n",per[i].name);
printf("\t固定電話: %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此人手機號: %s\n",per[i].mobile);
printf("\t此人分類: %s\n",per[i].sort);
printf("\n\n");
}

else
k++;
}
if(k==n)
{
printf("\t檔案中沒有此人!\n");
return;
}

} ;

if(m==3)
{
char s[20];
int i=0,k=0;
printf("\t請輸入想查詢的分類:");
scanf("\t%s",s);
for(i=0;i<n;i++){
if(strcmp(per[i].sort,s)==0){
printf("\t此人編號: %d\n",per[i].score);
printf("\t姓名: %s\n",per[i].name);
printf("\t固定電話: %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此人手機號: %s\n",per[i].mobile);
printf("\t此人單位: %s\n",per[i].sort);
printf("\n\n");
}

else
k++;
}
if(k==n)
{
printf("\t檔案中沒有此人!\n");
return;
}

} ;
}
//修改記錄
void Change(Person per[],int n)
{
char s[20];
int i=0;
printf("\t請輸入想修改的記錄中的名字:");
scanf("%s",s);
while(strcmp(per[i].name,s)!=0&&i<n)
i++;
if(i==n)
{
printf("\t檔案中沒有此人!\n");
return;
}
printf("\t編號:");
scanf("\t%d",&per[i].score);
printf("\t姓名:");
scanf("\t%s",per[i].name);
printf("\t電話號碼:");
scanf("\t%s",per[i].num);
printf("\t單位:");
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移動手機:");
scanf("\t%s",per[i].mobile);
printf("\t所屬類別:");
scanf("\t%s",per[i].sort);
printf("\t修改成功！");
}
//寫入文件
void WritetoText(Person per[],int n)
{
int i=0;
FILE *fp; /*定義文件指針*/
char filename[20]; /*定義文件名*/
printf("\t保存到文件\n"); /*輸入文件名*/
printf("\t請輸入所保存的文件名:");
scanf("\t%s",filename);
if((fp=fopen(filename,"w"))==NULL)
{
printf("\t無法打開文件\n");
system("pause");
return;
}
fprintf(fp,"******************************************通訊錄******************************************\n");
fprintf(fp,"編號姓名電話號碼通信地址電子郵箱\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條記錄****************************************\n",n);
fclose(fp); /*關閉文件*/
printf("保存成功!\n");
}

/* 主函數*/
int main()
{
int n=0;
for(;;)
{
switch(menu_select())
{
case 1:
printf("\n\t添加記錄到檔案\n");
n=Input(pe,n);
break;

case 2:
printf("\n\t從檔案中刪除記錄\n");
n=Delete_a_record(pe,n);
printf("\t");
system("pause");
break;

case 3:
printf("\n\t在檔案中查找記錄\n");
Query_a_record(pe,n);
printf("\t");
system("pause");
break;

case 4:
printf("\n\t修改檔案中的記錄\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謝謝使用，再見!\n");
printf("\n\t\t");
system("pause");
exit(0); //退出程序
}
}
}

Ⅲ 學生選課管理系統要求用c語言編寫最好不要用到鏈表

/*你把所有標記為「選題」的內容改為「選課」即可，用的不是鏈表，是隨機文件*/
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define szSTR 256
#define szNAME 10
#define szGROUP 5 /*每個小組最多允許5名組員，包括組長*/
#define fileAssignments "c:\\0.txt"
#define fileProjects "c:\\1.txt"
#define cntTYPE 4
/*題目*/
char Types[cntTYPE][11] = {"數據結構類", "趣味類", "管理類", "自選類"};
struct TAssignment {
int number; /*題目編號*/
int level; /*難度系數*/
int type; /*類別*/
char title[szSTR];
char requirements[szSTR]; /*技術要求*/
char features[szSTR]; /*技術特點*/
};

time_t Date_Input(char * msg)
{
struct tm t; memset(&t, 0, sizeof(t));
printf("請輸入%s日期，格式為年/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("請輸入%s，以回車結束：", msg);
scanf("%d", x);
if(*x < 0) *x = -*x;
if(*x) break;
printf("錯誤的輸入，請重新輸入。\n");
}
}
void String_Input(char * msg, char * str)
{
printf("請輸入%s，以回車結束：", msg);
fflush(stdin);
fgets(str, szSTR, stdin);
}

int Type_Input(void)
{
int t = 0, i = 0;
for(;;) {
printf("請輸入題目類別：");
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("錯誤的輸入\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, "題目文件無法打開\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("題目編號", &(a.number ));
p = ASSG_Query(a.number );
if(p) {
fprintf(stderr, "該題目已存在。\n");
return ;
}
Number_Input("難度系數", &(a.level));
String_Input("題目名稱", a.title );
a.type = Type_Input();
String_Input("技術要求", a.requirements);
String_Input("技術特點", a.features);
f = fopen(fileAssignments, "ab");
if(!f) {
fprintf(stderr, "題目文件無法打開\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("題目編號", &(a.number ));
p = ASSG_Query(a.number );
if(p == 0) {
fprintf(stderr, "該題目不存在。\n");
return ;
}
p--;
f = fopen(fileAssignments, "rb+");
if(!f) {
fprintf(stderr, "題目文件無法打開！\n");
return ;
}
fsetpos(f, &p);
memset(&a, 0, sizeof(a));
fwrite(&a, sizeof(a), 1, f);
fclose(f);
printf("刪除成功！\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, "目前資料庫中沒有題目。\n");
return ;
}
printf("\n題目資料庫\n");
while(!feof(f)) {
r = fread(&a, sizeof(a), 1, f);
if(r < 1) break;
if(a.number == 0) continue;
PrintLine();
printf("【編號】%d\t【類別】%s\t【難度系數】%d\t【題目】%s【技術要求】%s【技術特點】%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("【尚未選題】\n");
return ;
}
p--;
f = fopen(fileAssignments, "rb");
fsetpos(f, &p);
fread(&a, sizeof(a), 1, f);
fclose(f);
printf("【題目編號】%d【類別】%s【難度系數】%d\t【題目】%s",
a.number , Types[a.type ], a.level ,a.title );
}

int ASSG_Choose(void)
{
int number = 0; fpos_t p = 0;
Number_Input("題目編號", &number);
p = ASSG_Query(number);
return p?number:0;
}
void ASSG_Menu(void)
{
int cmd = 0;
for(;;) {
printf("*****題目管理*****\n0-查看\t1-新增\t2-刪除題目\t任意鍵返回\n");
cmd = getch() - '0';
switch(cmd) {
case 0: ASSG_Report(); break;
case 1: ASSG_Append(); break;
case 2: ASSG_Delete(); break;
default: return ;
}
}
}

/*項目信息*/
struct TProject {
int group_number; /*組號*/
char members[szGROUP][szNAME]; /*小組成員，編號0為組長*/
int assignment; /*選題*/
time_t date_open; /*開題日期*/
time_t date_close; /*結題日期*/
char teacher[szNAME];/*指導教師*/
int process; /*進度0~100%*/
char jobs[szSTR]; /*分工*/
int score; /*評分*/
};

void PROJ_Report(void)
{
struct TProject p; int r = 0;
FILE * f = fopen(fileProjects, "rb");
if(!f) {
fprintf(stderr, "目前沒有開放項目信息。\n");
return;
}
printf("*****項目及小組信息*****\n");
while(!feof(f)) {
r = fread(&p, sizeof(p), 1, f);
if(r < 1) break;
if(p.group_number ==0) continue;
PrintLine();
printf("【組號】%d\t【指導教師】%s【組長】%s\n",
p.group_number , p.teacher , p.members[0]);
printf("【組員】%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("【開題日期】"); Date_Print(p.date_open);
printf("【結題日期】"); Date_Print(p.date_close);
printf("【進度】%d%%【評分】%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("項目小組編號", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q) {
fprintf(stderr, "該小組已經存在。\n");
return ;
}
printf("請錄入組員信息，第一個組員是組長：");
for(i = 0; i< 5; i++) scanf("%s", p.members [i]);
printf("請輸入指導教師姓名："); 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("項目小組已創建，可以從菜單進行選題。\n");
}

void PROJ_Delete(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0;
memset(&p, 0, sizeof(p));
Number_Input("項目小組編號", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "沒有關於該小組的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("該小組信息已刪除！\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("項目小組編號", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "沒有關於該小組的信息。\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, "錯誤的題目編號。請在題庫中查證後重新選題\n");
return ;
}
if(PROJ_Invalid(p.assignment)) {
fprintf(stderr, "已經有5個小組選擇了該題目，請重新選題\n");
return ;
}
p.date_open = Date_Input("開題");
p.date_close= Date_Input("結題");
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("項目小組編號", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "沒有關於該小組的信息。\n");
return ;
}
q--;
f = fopen(fileProjects, "rb");
if(!f) {
fprintf(stderr, "資料庫無記錄!\n");
return ;
}
fsetpos(f, &q);
memset(&p, 0, sizeof(p));
fread(&p, sizeof(p), 1, f);
fclose(f);
if(p.assignment < 1) {
fprintf(stderr, "尚未選題，請選題後再補登進度\n");
return ;
}
Number_Input("進度（0~100）", &(p.process ));
if(p.process <0 || p.process > 100) {
fprintf(stderr, "錯誤的進度\n");
return ;
}
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("進度已經登記完成！\n");
}

void PROJ_Evaluate(void)
{
struct TProject p; fpos_t q = 0; FILE * f = 0;
memset(&p, 0, sizeof(p));
Number_Input("項目小組編號", &(p.group_number));
q = PROJ_Query(p.group_number );
if(q == 0) {
fprintf(stderr, "沒有關於該小組的信息。\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, "尚未選題，請選題後再進行評分\n");
return ;
}
Number_Input("評分（0~100）", &(p.score ));
if(p.score <0 || p.score > 100) {
fprintf(stderr, "錯誤的評分\n");
return ;
}
f = fopen(fileProjects, "rb+");
fsetpos(f, &q);
fwrite(&p, sizeof(p), 1, f);
fclose(f);
printf("成績已經評定完成！\n");
}

void PROJ_Menu(void)
{
int cmd = 0;
for(;;) {
printf("*****項目管理*****\n0-查看\t1-新增\t2-刪除\t3-選題\t4-登記進度\t5-打分\t任意鍵返回\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("*****歡迎使用學生實踐管理軟體*****\n0-題目管理\n1-項目管理\n其他任意鍵退出\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語言：學生選課系統程序設計（最好含流程圖的）

#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//課程信息結構體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數
int Melepeo;//課程人數上限
struct couse * next;
};
struct student//學生信息結構體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數量
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()//錄入課程子函數(從鍵盤錄入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\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()//錄入鍵盤子函數(從文件錄入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("輸入要讀入的文件路徑:");
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()//錄入課程主函數
{
int i;
printf("\t\t\t錄入課程信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//課程管理子函數(增加課程)
{
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)//課程管理子函數(刪除課程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n沒有課程,無法刪除!\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("已刪除該編號課程!\n");
N1=N1-1;
}
else printf("無該編號的課程!\n");
end:;
}
void managementc()//課程管理主函數
{
struct couse * incouse;
int i,num1;
printf("\t\t\t課程管理\n");
printf("1.新增課程\n");
printf("2.刪除課程\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("請輸入要刪除課程的編號:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//錄入學生信息子函數（從鍵盤錄入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("學生學號\t學生姓名\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()//錄入學生信息子函數（從文件錄入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("輸入要讀入的文件路徑:");
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()//錄入學生信息主函數
{
int i;
printf("\t\t\t錄入學生信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//學生信息管理子函數(填加學生信息)
{
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)//學生信息管理子函數（刪除學生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n沒有該學生信息,無法刪除!\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("已刪除該學生信息!\n");
N2=N2-1;
}
else printf("無該學號的學生!\n");
end:;
}
void managements()//學生信息管理主函數
{
struct student * incouse;
int i,num2;
printf("\t\t\t學生信息管理\n");
printf("1.新增學生信息\n");
printf("2.刪除學生信息\n");
printf("3.返回主菜單\n");
printf("請選擇(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("學生學號\t學生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("請輸入要刪除學生的學號:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//選課
{
struct couse * p;
int num1,i;
printf("請輸入要選課的編號:\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()//學生選課子函數(查詢可選課程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("請輸入你的學號:");
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,請進入主菜單錄入你的信息!\n");
goto end;
}
c=head1;
printf("你的可選課程編號:\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("你已選完所有課程，無法再多選!\n");
goto end;
}
printf("選課(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("繼續選課(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退課
{
struct couse * p1;
int num1,i,j;
printf("請輸入你要退掉的課程編號:\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("退課成功!\n");
}
void hcheak()//學生選課子函數（查詢已選課程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("請輸入學號:\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,請回主菜單錄入信息:\n");
goto end;
}
printf("已選課程編號:\n");
if(p->nelenum[0]==0)
{
printf("你還沒選課!\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("總學分:%d\n",f);
printf("是否進行退課(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("繼續退課(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//學生選課主函數
{
int i;
printf("\t\t\t學生選課\n");
printf("1.查詢可選課程\n");
printf("2.查詢已選課程\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//輸出課程信息
{
struct couse * p;
p=head1;
printf("課程編號課程名稱學分課程已選人數課程人數上限\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()//輸出學生信息
{
struct student * p;
p=head2;
printf("學生學號學生姓名已選課程數量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存儲課程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("輸入課程信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
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("課程信息已保存在%s中!\n",filepath);
}
void intos()//存儲學生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("輸入學生信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("學生信息已保存在%s中!\n",filepath);
}
void into()//存儲信息
{
int i;
printf("1.存儲課程信息\n");
printf("2.存儲學生信息\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函數
{
int i;
printf("\t\t系統信息查看及存儲\n");
printf("1.查看課程信息\n");
printf("2.查看學生信息\n");
printf("3.存儲信息\n");
printf("4.返回主菜單\n");
printf("請輸入(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()//主函數
{
int i;
start:
printf("\n\t\t\t歡迎使用學生選課系統!\n");
printf("菜單:\n");
printf("1.錄入課程信息\n");
printf("2.課程管理\n");
printf("3.錄入學生信息\n");
printf("4.學生信息管理\n");
printf("5.學生選課\n");
printf("6.系統信息查看及存儲\n");
printf("7.退出系統\n");
printf("\n請輸入菜單選項(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("輸入錯誤,請重輸:\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("感謝使用本系統!\n\n再見!\n");
}
}
return(0);
}

Ⅳ c語言編寫學生選課系統

#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語言寫一個學生選課系統

Ⅶ c語言學生選修課程管理系統

#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]; //這個數組用來保存所有的學生信息和文件裡面的一致
int Number=0; //記錄總的學生人數也就是數組/文件裡面的學生人數
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，是否要創建一個?(y/n)\n");
scanf("%c",&yesorno);
if(yesorno=='y'||yesorno=='Y')
{

//這里僅為了建立文件
fp=fopen("C://student.dat","wb");
fclose(fp);
}
else
exit(0);
}
else
{
Number=dq(st); //要是文件只能夠已經有數據將數據初始化到數組中
}
system("cls");
while(true)
{
xianshi();
printf("\t\t====>請選擇：");
scanf("%d",&choose);
system("cls");
switch(choose)
{
case 0: exit(0);
//退出
break;
case 1: add();
fh();//增加學生成績
break;
case 2: select();
fh();//查看學生成績
break;
case 3: chazhao();
fh();// 查找
break;
case 4: del();
fh();//刪除
break;
case 5: tj();
fh();//統計
break;
case 6: px();
fh();//排序
break;
case 7: bjg();
fh();//輸出不及格
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=====程序在運行時已自動保存.....\n");
}
void fh()
{
printf("\t===>按Enter鍵返回主菜單\n");
}
void xg() //修改學生信息
{
int way=0;
printf("請選擇修改查找方式\n");
printf("1 按姓名查找修改\n");
printf("2 按學號查找修改\n");
scanf("%d",&way);
switch(way)
{
case 1: xmxg();
break;
case 2: xhxg();
break;
default: printf("輸入有誤，結束!\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("請輸入要修改的學生姓名：");
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標
}
break;
}
printf("\t姓名\t學號\t成績\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("請重新輸入該學生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("學號：");
scanf("%s",st[changeIndex].ID);
printf("成績：");
scanf("%d",&st[changeIndex].score); //信息修改後重新更新文件裡面的數據以保持數據一致性
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
}
void xhxg()//按學號修改
{
FILE *fp=NULL;
char id[60];
int i=0;
int changeIndex=0;
int index=0;
printf("請輸入要修改的學生學號：");
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標
}
break;
}
printf("\t姓名\t學號\t成績\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("請重新輸入該學生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("學號：");
scanf("%s",st[changeIndex].ID);
printf("成績：");
scanf("%d",&st[changeIndex].score);

//信息修改後重新更新文件裡面的數據以保持數據一致性
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() //輸出不及格人數
{
int i=0;
printf("以下是不及格:\n");
printf("\t姓名\t學號\t成績\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("你想輸出前幾名的成績：");
scanf("%d",&wantNUmber);
if (wantNUmber>Number)
{
wantNUmber=Number;
} printf("\t姓名\t學號\t成績\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()//統計
{
int i=0;
double sum=0.0;
for(i=0;i<Number;i++)
{
sum+=st[i].score;
}
printf("全班總分為：%f\n",sum);
printf("平均分為：%f\n",sum/Number);
}
void del()//刪除
{
int n=0;
printf("1 按姓名刪除\n");
printf("2 按學號刪除\n");
scanf("%d",&n);
switch(n)
{
case 1: xmsc();
break;
case 2: xhsc();
break;
}
}
void xmsc()//按姓名刪除
{
FILE *fp=NULL;
char name[60];
int i=0;
int j=0;
printf("請輸入要刪除的學生姓名：");
scanf("%s",name);
for(i=0;i<Number;i++)
{
if (strcmp(name,st[i].name)==0) //如果查找到就刪除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
} //將剩餘數據寫入文件重新一寫的方式打開文件把以前的數據擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("刪除成功;\n");

}
void xhsc()//按學號刪除
{
FILE *fp=NULL;
char id[60];
int i=0;
int j=0;
printf("請輸入要刪除的學生學號：");
scanf("%s",id);
for(i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID)==0) //如果查找到就刪除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
}

//將剩餘數據寫入文件重新一寫的方式打開文件把以前的數據擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("刪除成功;\n");
}
void chazhao()//查找學生
{
int n=0;
printf("1 按姓名查找\n");
printf("2 按學號查找\n");
scanf("%d",&n);
switch(n)
{
case 1: xmcz();
break;
case 2: xhcz();
break;
default: printf("輸入有誤，結束!\n");
break;
}
}
void xhcz()//按學號查找
{
char id[7];
int i=0;
printf("請輸入要查找學生學號:");
scanf("%s",id);
system("cls");
printf("\t姓名\t學號\t成績\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("請輸入要查找學生姓名:");
scanf("%s",name);
system("cls");
printf("\t姓名\t學號\t成績\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^^^^^^^^^^ 武漢工程大學郵電與信息工程學院 ^^^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 07網路與安全管理2班 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^ 易樊製作 ^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 禁止CTRL+C 謝謝合作 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^^^ QQ:895115828\n\n");
printf("\t**********************************************************\n\n");
}
void select()//查看學生
{
int i=0;
printf("以下是全部學生成績\n");
printf("\t姓名\t學號\t成績\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()//增加學生
{
int numberTemp=0;
int i=0;
struct student temp; //臨時保存信息
printf("請輸入要增加學生成績個數：");
scanf("%d",&numberTemp);
for(i=0;i<numberTemp;i++)
{
printf("輸入第%d個同學信息\n",i+1);
printf("姓名：");
scanf("%s",temp.name);
printf("學號：");
scanf("%s",temp.ID);
printf("成績：");
scanf("%d",&temp.score);
st[Number++]=temp; //將剛添加的寫入到數組
bc(&temp); //將剛添加的寫入到文件 }
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* 學生成績管理系統 *\n");
printf("\t* *\n");
printf("\t* [1] 增加學生成績 [2] 查看學生成績 *\n");
printf("\t* [3] 查找學生成績 [4] 刪除學生成績 *\n");
printf("\t* [5] 統計（總成績和平均分） [6] 輸出前N名學生成績 *\n");
printf("\t* [7] 輸出不及格人數 [8] 修改學生信息 *\n");
printf("\t* [9] 關於作者 [10] 保存數據 *\n");
printf("\t* [0] 退出系統 *\n");
printf("\t*****************************************************************\n");
}運行成功，請你下去後慢慢研究下這個程序，很簡單的，祝你成功！~
求採納為滿意回答。

Ⅷ c語言學生選課管理系統

#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() //菜單函數
{
printf("************************************\n");
printf("如果錄入信息，請選擇1\n");
printf("如果瀏覽信息，請選擇2\n");
printf("如果按學分查詢課程，請選擇3\n");
printf("如果按課程性質查詢課程，請選擇4\n");
printf("如果按選修課程查詢，請選擇5\n");
printf("如果想進行選課，請選擇6\n");
printf("如果想退出，請選擇0\n");
printf("*************************************\n");
}

struct course* scan(FILE*fp) //輸入課程信息
{
struct course*head; //鏈表頭指針
struct course*p1,*p2; //指示指針
int n=0;
p1=p2=(struct course*)malloc(LEN); //開辟內存空間
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf("請輸入數據：");
scanf(FORM,INPUT); //輸入數據
fprintf(fp,FORM1,OUTPUT);
head=NULL;
while(p1->num!=0) //鏈表結束的判斷條件
{n=n+1;
if(n==1)
head=p1; //當在第一個結點時，頭指針等於第一個結點的首地址
else
p2->next=p1;
p2=p1;
p1=(struct course*)malloc(LEN); //繼續開辟內存空間
printf("請輸入數據：");
scanf("%ld",&p1->num); //輸入課程號
if(p1->num!=0) //判斷課程號是否為0，如果為0，程序結束
{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; //最後一個結點的值為空
fclose(fp); //關閉文件
return(head); //返回頭指針
}

void print(struct course*head) //將輸入的內容顯示在屏幕上
{
struct course*p1;
if(head!=NULL) //如果頭指針為空，則程序結束
p1=head;
else
goto end;
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
do
{printf(FORM1,OUTPUT); //輸出內容
p1=p1->next; //指針指向下一個結點
}while(p1!=NULL);
end:;
}

void search_grade(struct course*head) //按學分查詢課程
{
struct course*p1;
int k,n;
n=0;
p1=head;
printf("請輸入查詢課程的學分：\n");
scanf("%d",&k);
while(p1!=NULL) //根據鏈表裡面的內容輸出
{if(k==p1->grade)
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;}
if(n==0)
printf("無結果\n"); //如果沒有課程，則輸出無結果
}

void search_kind(struct course*head)//按課程性質查詢
{
char a[10];
int n=0;
struct course*p1;
p1=head;
gets(a);
while(p1!=NULL)
{if(strcmp(a,p1->kind)==0) //用strcmp函數進行字元串的比較
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT); //如果相同，輸出課程信息
n++;}
p1=p1->next;}
if(n==0)
printf("無結果\n");
}

void search_else(struct course*head) //查詢所有選修課程
{
struct course*p1;
int n=0;
p1=head;
while(p1!=NULL)
{if(strcmp(p1->kind,"xuanxiu")==0)
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;
}
if(n==0)
printf("沒有選修課程\n");
}

void choose(struct course*head) //選課函數
{
struct course*p1;
int k,s=0; //s為所選課程的學分總數，K為所選課程的課程編號
if(head!=NULL)
{p1=head;
while(s<60) //判斷選課是否結束
{
p1=head;
printf("請輸入選擇課程的課程編號：");
scanf("%d",&k);
while(p1!=NULL) //當遍歷一遍鏈表之後，循環結束
{
if(k==p1->num) //當找到對應的課程編號後，輸出課程信息
{s=s+p1->grade;
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
printf("選課成功！\n");
break;}
else
p1=p1->next;
if(p1==NULL) //鏈表走到最後，則沒有找到相應課程
printf("沒有這門課程\n");
}
}
printf("學分達到要求\n");
}
}

void main()
{ struct course*head;
FILE*fp;
int k;
fp=fopen("課程list.txt","a+");
loop:mune(); //goto循環的開始位置
printf("請輸入你的操作:\n");
scanf("%d",&k);
if(k!=0)
{switch(k) //利用switch語句實現菜單式工作
{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語句實現循環
}

自己做的，比較粗糙...用的頭指針作為參數，所以只能一次性執行完~~~

Ⅸ C語言程序設計，學生選課系統

這是這幾天我用C做的一個簡易的學生選課系統.其實是我們的1道程序實踐考試題,我想請大家看看,幫我提些建議.
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//課程信息結構體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數
int Melepeo;//課程人數上限
struct couse * next;
};
struct student//學生信息結構體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數量
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()//錄入課程子函數(從鍵盤錄入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\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()//錄入鍵盤子函數(從文件錄入)

Ⅹ C語言編寫學生選課管理信息系統

你好，這個系統只需要列印這些信息嗎？還是需要其他操作，如果只是列印的話不難。
你可以使用結構體或者數組來存放人員課程信息，然後列印功能就是循環輸出數組信息就可以了
如果還有其他問題可以繼續問我

c語言學生選課管理系統

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