C语言题，运行结果没问题，但是系统不给通过

代码修改如下：

#include <stdio.h>
int main()
{
    int sum = 0,m;
    printf("Input m:\n");
    scanf("%d",&m);
    while (m!=0)
    {
        sum += m;
        printf("sum = %d\n",sum);
        printf("Input m:\n");
        scanf("%d",&m);
    }
    return 0;
}