c primer plus第六章第一个程序,我按书上的程序往电脑里输入的,最终运行的结果总是比正确答案大1。我用的是DEVC++
//summing.c --根据用户键入的整数求和
#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", &sum);
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;
}