ACM 10929 - You can say 11

#include<stdio.h>
#include<string.h>

char dig[10000];

int main() 
{
    int odd, even, i;
    while(gets(dig)) 
    {
        if(!strcmp(dig,"0")) break;
        odd = even = 0;
        for(i = 0; dig[i]; i++) 
        {
            if(i % 2) odd += dig[i] - '0';
            else even += dig[i] -'0';
        }
        if((odd - even) % 11) printf("%s is not a multiple of 11.\n",dig);
        else printf("%s is a multiple of 11.\n",dig);
    }
    return 0;
}

回目錄
回首頁