#include<stdio.h>
int main(void)
{  
    long num;
    long sum=0L;
    int status;

    printf("please enter an integer to be summed ");
    printf("(q to quit): ");
    status=scanf("%ld",&num);
    while (status == 1)
    {  
        sum= sum+num;
        printf("please enter next integer (q to quit): ");
        status=scanf("%ld",&num);
    }
    printf("Those integers sum to %d.\n", sum);

    return 0;
}

还是不行，不是暂停的问题，是根本不执行最后的pringf.