编辑代码

#include <stdio.h>
void main(){
    int i,n,t,h;
    for(i=100;i<=999;i++){
        h = i/100;
        t = (i/10)%10;
        n = i % 100;
        if((h+t+n)==7&&n==1){
            printf("the num is %d",i);
        }
    }
}