Friday, September 27, 2013

uva 11332(summing digit)

#include <stdio.h>
int main()
{
    long m,sum=0;
    while(scanf("%ld",&m)){
            if(m==0)
            break;
    again:
        sum=0;
    while(m)
    {
        sum=sum+m%10;
        m=m/10;

    }
    if(sum/10==0)
    printf("%d\n",sum);
    else{
        m=sum;
        goto again;

    }
    }
    return 0;

}

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