C++简单计算器实例

#include "stdafx.h"
#include <iostream>
using namespace std;
int main()
{
	int n, m,q;
	char c;
	cin >> n >> m >> c;
	switch (c)
	{
	case '+':q=n + m; break;
	case '-':q=n - m; break;
	case '*':q=n * m; break;
	case '/':
		if (m == 0)
		{
			cout << "Divided by zero!!!";
		}

		q = n / m;
		break;

	default:
		cout << "Invalid operator!!!";
		break;
	}
	cout << q;
}