编程没有错误，运行是错误的。

Question

虽然编程没有错，但是运行起来是错误的。感觉很奇怪，希望各位能帮我解决一下问题，非常感谢

Answer 1

修改如下，供参考：

#include <stdio.h>
int main()
{
    int i, choice;
    double price;
    printf("[1]select chips\n");
    printf("[2]select popcorn\n");
    printf("[3]select chocolate\n");
    printf("[4]select cola\n");
    for (i = 1; i <= 8; i++) {
        printf("enturn choice:");
        scanf("%d", &choice);   //scanf("%f", &choice); 修改
                                 //choice = getchar();   修改
        getchar();
        switch (choice) {
        case 1:printf("3.00\n"); price = 3.00; break;//修改
        case 2:printf("2.50\n"); price = 2.50; break;
        case 3:printf("4.00\n"); price = 4.00; break;
        case 4:printf("3.50\n"); price = 3.50; break;
        case 0: break;
        default:printf("it is type\n"); break;
        }
    }
    printf("%.2f", price);
    return 0;
}