%d怎么用

不语

#include<stdio.h>
int main ( )
    {int a,b,sum;
    a=1;b=1;
    sum=a+b;
    printf("sum is %d\n",sum);
    return 0;
    }

不语

#include<stdio.h>
int main ( )
    {int a,b,sum;
    a=1;b=1;
    sum=a+b;
    printf("sum is %d\n",sum);
    return 0;
    }