编辑代码

#include <iostream>
using namespace std;
int main() {
    int pay, price,bala;
    printf("write down your item price");
    scanf("%d",&price);
    printf("how many that you pay");
    scanf("%d",&pay);
    while (pay < price){
        bala = price - pay;
        printf("you still need to pay %d",bala);
        price = price - pay;
        scanf("%d", &pay);
    }
    printf("%d is the total price, %d is the cash that u pay, %d is the cash that u get.",price,pay,pay-price);

	return 0;
}