c語言買冰球

A. 請問c語言如何實現輸入一個商品的名字和購買數量，自動計算出總價，商品有蘋果和梨子，單價分別是10和

#define_CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
structgoods
{
	chargoodsName[20];
	intgoodNum;
};
intpriceCount(structgoodsinputGoods)
{
	if(!strcmp(inputGoods.goodsName,"蘋果"))
		returninputGoods.goodNum*10;
	if(!strcmp(inputGoods.goodsName,"梨子"))
		returninputGoods.goodNum*11;
	else
		return-1;
}

intmain()
{
	structgoodsinputGoods={};
	while(1)
	{
		printf("請輸入商品名字和購買數量
");
		scanf("%s%d",inputGoods.goodsName,&inputGoods.goodNum);
		if(priceCount(inputGoods)!=-1)
			printf("購買%s的總價是:%d
",inputGoods.goodsName,priceCount(inputGoods));
		else
		//printf("我頭像,驚喜")
			printf("商品名字輸入有問題
");
	}
	system("pause");
	return0;
}

運行結果:

B. C語言程序

#include<stdio.h>
intmain()
{
floatval=0.0;
printf("輸入火腿腸數量：");
scanf("%f",&val);
floatnum=val*10.5;

printf("
輸入方便麵數量：");
scanf("%f",&val);
num+=val*12.5;

printf("
輸入牛奶數量：");
scanf("%f",&val);
num+=val*55.9;
printf("
應付金額%f￥輸入支付金額：",num);
scanf("%f",&val);
printf("
應找顧客金額：%f",val-num);

scanf("%f",&val);
return0;
}