1813.cpp

这是哈尔滨工业大学acmOJ的源代码

/*  This Code is Submitted by wywcgs for Problem 1813 on 2006-01-15 at 15:13:02 */ 
#include <cstdio>

int main()
{
	int i, a, b;
	
	while(scanf("%d %d", &a, &b) == 2 && (a != 0 || b != 0)) {
		int c = a + b, carry = 0;
		for(i = 0; i < 10; i++) {
			if(c%10 != (a%10 + b%10) % 10) carry++;
			a /= 10; b /= 10; c /= 10;
		}
		if(carry == 0) printf("No carry operation.\n");
		else if(carry == 1) printf("1 carry operation.\n");
		else printf("%d carry operations.\n", carry);
	}
	
	return 0;
}