#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
char a[2000];
int sum,l,i;
int main()
{
    while(scanf("%s",a)&&strcmp(a,"0")!=0)
    {
        sum=0;
        l=strlen(a);
        for(i=0;i<l;i++)
        sum+=a[i]-'0';
        sum=sum%9;
        printf("%d\n",sum);
    }
    return 0;
}

• 模9余0的情况啊，大哥 (2) Eov_Second 2016-12-29 14:06:56