10035 - Primary Arithmetic

#include<iostream>
#include<vector>
#include<algorithm>
#include<string>
#include<map>
#include<math.h>
#include<sstream>
using namespace std;

int main() {
	int a, b;
	while (cin >> a >> b) {
		if (a == 0 && b == 0) {
			break;
		}
		int i = 0, j = 0, k = 0, count = 0;
		while (a || b) {
			i = a % 10;
			j = b % 10;
			k += i + j;
			if (k > 9) {
				count++;
			}
			a = a / 10;
			b = b / 10;
			k = k / 10;
		}
		if (count == 0) {
			cout << "No carry operation." << endl;
		}
		if (count == 1) {
			cout << "1 carry operation." << endl;
		}
		if (count > 1) {
			cout << count << " carry operations." << endl;
		}
	}
}