Hangzhou Electric OJ 1070 (C ++)

Basic questions.

#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
	int T;
	cin >> T;
	char op; 运算符
	int a, b; 操作数
	while (T--)
	{
		cin >> op >> a >> b;
		if (op == '+')
			cout << a + b << endl;
		else if (op == '-')
			cout << a - b << endl;
		else if (op == '*')
			cout << a * b << endl;
		else
		{
			if (a % b != 0) //结果有小数
				cout << fixed << setprecision(2) << 1.0 * a / b << endl;
			else
				cout << a / b << endl;
		}
	}
	return 0;
}

Keep up.