求一个简单的C语言超市收银系统

求一个简单的C语言超市收银系统

#include “stdio.h”#include “math.h”#include “windows.h”int main(){float a[10] = {0};int i = 0;float sum = 0;for(i = 0 ; i < 10 ; i++){ scanf(“%f”,&a[i]); sum += a[i];}float aver = sum / 10;printf(“%f\n”,aver);sleep(10000);return 1;}

一、写一个超市收银机结账程序

#include

#include

int main()

{

int i=0;

double sum=0,price,in;

printf(“请输入价格:\n”);

do{

scanf(“%lf”,&price);

sum+=price;

}

while(price!=0);

printf(“总金额:%.1f\n”,sum);

printf(“请输入收款金额:\n”);

scanf(“%lf”,&in);

printf(“找零金额:%.1f\n”,in-sum);

}