关于#c语言#的问题：这个代码输出的原总价和折后价一直是0

Question

这个代码输出的原总价和折后价一直是0，是为什么啊？

#include <stdio.h>
void main()
{
    float Yprice,Zprice;
    float  pricesum, Ysum,sum[1000];
    int n, kind, Number;
    float numbersum;
    Yprice = 0;
    Zprice = 0;
    Number = 0;
    Ysum = 0;
    n = 0;
    kind = 0;
    pricesum = 0;
    numbersum = 0;
    printf("请输入商品总类：");
    scanf_s("%d",&kind);
    for (int i = 0; i <kind; i++)
    {
        printf("请输入商品的单价：");
        scanf_s("%d", &Yprice);
        printf("请输入商品数量：");
        scanf_s("%d", &Number);
        sum[i] = Yprice * Number;
    }
    for (int i = 0; i < kind; i++)
    {
        Ysum += sum[i];
    }
    printf("商品的原总价为：%d\n", Ysum);

    if (Ysum < 1000)
    {
        n = (int)Ysum/ 100;
        Zprice = Ysum - (20 * n);
    }
    else if (Ysum >= 1000)
    {
        Zprice = Ysum * 0.75;
    }
    if (numbersum > 10)
    {
        Zprice *= 0.9;
    }
    printf("商品打折后的价格为:%d\n", Zprice);
}

Answer 1

几个输入、输出语句的数据类型错误，修改如下，改动处见注释，供参考：

#include <stdio.h>
void main()
{
    float Yprice,Zprice;
    float  pricesum, Ysum,sum[1000];
    int n, kind, Number;
    float numbersum;
    Yprice = 0;
    Zprice = 0;
    Number = 0;
    Ysum = 0;
    n = 0;
    kind = 0;
    pricesum = 0;
    numbersum = 0;
    printf("请输入商品总类：");
    scanf_s("%d",&kind);
    for (int i = 0; i <kind; i++)
    {
        printf("请输入商品的单价：");
        scanf_s("%f", &Yprice);     //scanf_s("%d", &Yprice); 修改
        printf("请输入商品数量：");
        scanf_s("%d", &Number);
        sum[i] = Yprice * Number;
    }
    for (int i = 0; i < kind; i++)
    {
        Ysum += sum[i];
    }
    printf("商品的原总价为：%f\n", Ysum); // 修改
    //printf("商品的原总价为：%d\n", Ysum);
 
    if (Ysum < 1000)
    {
        n = (int)Ysum / 100;
        Zprice = Ysum - (20 * n);
    }
    else if (Ysum >= 1000)
    {
        Zprice = Ysum * 0.75;
    }
    if (numbersum > 10)
    {
        Zprice *= 0.9;
    }
    printf("商品打折后的价格为:%f\n", Zprice); // 修改
    //printf("商品打折后的价格为:%d\n", Zprice);
    system("pause");
}