UVA Problem 10929 (You can say 11) Solution

Problem Solving, UVa

#include <bits/stdc++.h>

using namespace std;

int main()

{

char input[1002];

    int i,j,l,sum;

    while(1)

    {

        gets(input);

        sum=0;

        l=strlen(input);

    if(input[0]=='0' and l==1)  break;

    for(i=0;i<l;i+=2)

    {

        sum+=input[i]-'0';

    }

    for(i=1;i<l;i+=2)

    {

        sum-=input[i]-'0';

    }

    if((sum) % 11) printf("%s is not a multiple of 11.\n",input);

    else

    printf("%s is a multiple of 11.\n",input);

    }

    return 0;

}

 

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