循环，滚动总计为c

Question

我正试图让一个c程序询问我要买多少件商品，而不是在保持滚动总数的同时询问每件商品的价格，然后在循环中再次询问。我的循环工作得很好，但在让它给我适当的输出方面遇到了问题。

这是我运行它时得到的输出。http://i119.photobucket.com/albums/o134/halodude808/assignment2_zpsd46e84b8.jpg

#include <stdio.h>
#include <math.h>
int main(void)
{
    //variables used
    float penny = .01;
    float nickel = .05;
    float dime = .1;
    float quarter = .25;
    int items = 0;
    float paid= 0.0;
    float total = 0.0;
    float price =0.0;
    int counter =0.0;
    for (;;)
    {
        printf("Please enter the number of grocery items:");
        scanf("%d", &items);
        for (counter = 1; counter <= items; counter++)
        {
            printf("Please enter the price for item #%d:", counter);
            scanf("%f", &price);
            total += price;

        }
        printf("items = %d total = %f n", &items, &total);
        getchar();
        getchar();
    }
}

Answer 1

更改

 printf("items = %f total = %f n", &items, &total);

至

printf("items = %i total = %f n", items, total);

此外，您可能需要考虑检查无效值（零、负数、字符等）。