#include <iostream>

int main()
{
    std::cout << "Input two positive numbers: " << std::endl;
    int firstNumber, secondNumber;
    std::cin >> firstNumber >> secondNumber;

    std::cout << "Choose one of the actions: +, -, *, / " << std::endl;
    char whatDo;
    std::cin >> whatDo;

    switch (whatDo) {
    case '+':
        std::cout << "Result: " << firstNumber + secondNumber << std::endl << "End!" << std::endl;
        break;
    case '-':
        std::cout << "Result: " << firstNumber - secondNumber << std::endl << "End!" << std::endl;
        break;
    case '*':
        std::cout << "Result: " << firstNumber * secondNumber << std::endl << "End!" << std::endl;
        break;
    case '/':
        std::cout << "Result: " << firstNumber / secondNumber << std::endl << "End!" << std::endl;
        break;
    default:
        break;
    }
}