c语言买冰球

A. 请问c语言如何实现输入一个商品的名字和购买数量，自动计算出总价，商品有苹果和梨子，单价分别是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,"苹果"))
		returninputGoods.goodNum*10;
	if(!strcmp(inputGoods.goodsName,"梨子"))
		returninputGoods.goodNum*11;
	else
		return-1;
}

intmain()
{
	structgoodsinputGoods={};
	while(1)
	{
		printf("请输入商品名字和购买数量
");
		scanf("%s%d",inputGoods.goodsName,&inputGoods.goodNum);
		if(priceCount(inputGoods)!=-1)
			printf("购买%s的总价是:%d
",inputGoods.goodsName,priceCount(inputGoods));
		else
		//printf("我头像,惊喜")
			printf("商品名字输入有问题
");
	}
	system("pause");
	return0;
}

运行结果:

B. C语言程序

#include<stdio.h>
intmain()
{
floatval=0.0;
printf("输入火腿肠数量：");
scanf("%f",&val);
floatnum=val*10.5;

printf("
输入方便面数量：");
scanf("%f",&val);
num+=val*12.5;

printf("
输入牛奶数量：");
scanf("%f",&val);
num+=val*55.9;
printf("
应付金额%f￥输入支付金额：",num);
scanf("%f",&val);
printf("
应找顾客金额：%f",val-num);

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