uva 10035.c

uva 10035.c

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

/*
carry = add1%10 + add2%10 + carry;
      carry /= 10;
      add1 /= 10;
      add2 /= 10;
      if( carry )
        count++;
*/

int main()
{
    long long int num1, num2;
    while(scanf("%lld %lld", &num1, &num2) != EOF && !(num1 == 0 && num2 == 0)) {
        int carry = 0, count = 0;
        while(num1 || num2) {
            int sum = num1 % 10 + num2 % 10 + carry;
            carry = sum > 9 ? 1 : 0;
            if(carry)
                count++;

            num1 /= 10;
            num2 /= 10;
        }

        if(count == 0)
            printf("No carry operation.\n");
        else if(count == 1)
            printf("1 carry operation.\n");
        else
            printf("%d carry operations.\n", count);
    }

    return 0;
}