#include <iostream>
#include <string>
using namespace std;
int main()
{
	string a1,a2;
	cin>>a1>>a2;
	while(!(a1=="0" && a2=="0"))
	{
		int l1 = 10 - a1.length();
		int l2 = 10 - a2.length();
		int carry;
		carry = 0;
		int i;
		int c;
		c = 0;
		for(i=1;i<=l1;i++)a1 = "0" + a1;
		for(i=1;i<=l2;i++)a2 = "0" + a2;
		//cout<<a1<<" "<<a2<<endl; 
		for(i=9;i>=0;i--)
		{
			char t1,t2;
			t1 = a1[i];
			t1-='0';
			t2 = a2[i];
			t2-='0';
			if(t1+t2+c>=10)carry++;
			c = (t1 + t2)/10;
		}
		if(carry==0)cout<<"No carry operation."<<endl;
		else if(carry>1)cout<<carry<<" carry operations."<<endl;
		else if(carry==1)cout<<"1 carry operation."<<endl;
		cin>>a1>>a2;
	}
	return 0;
}

• Re:不好意思再次纠正一下。 (9) hefei2 2006-01-12 11:59:38