以交互方式输入整数并求和

#include <stdio.h>

int main(void){
    long num;
    long sum = 0L;      /* initialize sum to zero   */
    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 %ld.\n, sum);

    return 0;
}