赛码网练习题

1. 

#include
#include

using namespace std;
int main(){
	string history, future;
	while (cin >> history >> future)
	{
		auto it = history.begin();
		while (it != history.end())
		{
			if (((*it - 'A') >= 0 && (*it - 'A') < 26) ||
				((*it - 'a') >= 0 && (*it - 'a') < 26) ||
				((*it - '0') >= 0 && (*it - '0') < 10))
				*it = '1';
			else
			{
				*it = '0';
			}
			it++;
		}
		int total = history.size(),count = 0;
		for (int i = 0; i < total; i++){
			if (history[i] == future[i]) count++;
		}
		float predict = (float)count / total;
		predict *= 100000;
		if (predict + 0.00001 > 100000)
			cout << "100.00%" << endl;
		else
		{
			int temp = (int)predict;
			if (temp % 10 >= 5){
				temp = temp / 10;
				temp++;
			}
			else
			{
				temp = temp / 10;
			}
				if (temp >= 10000) cout << "100.00%" << endl;
				else if(temp >= 1000)
				{
					cout << (char)('0' + temp / 1000);
					temp = temp % 1000;
					cout << (char)(temp / 100 + '0') << '.';
					temp = temp % 100;
					cout << (char)(temp / 10 + '0');
					temp = temp % 10;
					cout << (char)(temp + '0')<< '%' << endl;
				}
				else if (temp > 100)
				{
					cout << (char)(temp / 100 + '0') << '.';
					temp = temp % 100;
					cout << (char)(temp / 10 + '0');
					cout << (char)(temp % 10 +'0') << '%' << endl;
				}
				else
				{
					cout << '0' << '.';
					cout << (char)(temp / 10 + '0') << (char)(temp%10 + '0') << '%' << endl;
				}
		}
	}
}