#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main() {

	int whattodo, result;
	float num_1, num_2, res;
	cout << "Enter first number:" << endl;
	cin >> num_1;
	cout << "Enter second number:" << endl;
	cin >> num_2;
	cout << "Enter what to do:" << endl;
	cout << "1 - +" << endl;
	cout << "2 - -" << endl;
	cout << "3 - *" << endl;
	cout << "4 - /" << endl;
	cout << "5 - %" << endl;
	cout << "Your choice is:" << endl;
	cin >> whattodo;

	if (whattodo == 1) {
		res = num_1 + num_2;
		cout << "Solution is:" << endl;
		cout << num_1 << "+" << num_2 << "=" << res << endl;
	}

	if (whattodo == 2) {
		res = num_1 - num_2;
		cout << "Solution is:" << endl;
		cout << num_1 << "-" << num_2 << "=" << res << endl;
	}

	if (whattodo == 3) {
		res = num_1 * num_2;
		cout << "Solution is:" << endl;
		cout << num_1 << "*" << num_2 << "=" << res << endl;
	}

	if (whattodo == 4) {
		res = num_1 / num_2;
		cout << "Solution is:" << endl;
		cout << num_1 << "/" << num_2 << "=" << res << endl;
	}

	if (whattodo == 5) {
		result = (int)num_1 % (int)num_2;
		cout << "Solution is:" << endl;
		cout << num_1 << "%" << num_2 << "=" << result << endl;
	}

	if (whattodo != 1 || whattodo != 2 || whattodo != 3 || whattodo != 4 || whattodo != 5)
	{
		cout << "Incorrect choice. Try again." << endl;
	}

	system("pause");

	return 0;
}