#include<stdio.h>

int main()
{
    int counter=0;
    int grade;
    float sum=0;
    while(1)
    {
        printf("Input the grade:");
        scanf("%d",&grade);
        if(grade!=-1)
        {
            sum = sum + grade;
            counter++;
        }
        else
        {
            break;
        }
    }
    printf("The average is:%d\n",sum/counter);
    return 0;
}

为什么sum值一直是0...............我明明加了sum = sum + grade;  但是每次循环sum值一直是0000

是平均成绩~但是求得结果不对。总是0

能帮我指出错误吗？ 我感觉并没有错！