看来我把题想的难了

解题思路:

注意事项:

参考代码:

#include<iostream>

using namespace std;

int sum,t;

int main(){

    char c;

    while(c = getchar(),c != '0'){

        int n = c -'0';

        sum = 0;

        while( c = getchar(),c !='\n'){

            if(c == ' ') continue;

             t = c -'0';

            sum += t;

        }

        cout << sum <<endl;

    }

    return 0;

}