REALLY SH*TTY CALCULATOR :D

#include <iostream>
#include <windows.h>

using namespace std;

class menuCLASS{
    public:
        void menuLoad(){
            cout << "Select a Function 1-5" << endl;
            cout << "1 - Addition" << endl;
            cout << "2 - Subtraction" << endl;
            cout << "3 - Division" << endl;
            cout << "4 - Multiplication" << endl;
            cout << "5 - Quit" << endl;
        }
};

int readNumber(){
    int number;
    cin >> number;
    return number;
}

int doAddition(){
    int a = readNumber();
    int b = readNumber();
    return a + b;
}

int doSubtraction(){
    int a = readNumber();
    int b = readNumber();
    return a - b;
}

int doDivision(){
    int a = readNumber();
    int b = readNumber();
    return a / b;
}

int doMultiplication(){
    int a = readNumber();
    int b = readNumber();
    return a * b;
}

int main()
{
    // Loads Menu--------------//
        menuCLASS menuGEN;
    //-------------------------//

    // Keeps Loop Running------//
        int menuALIVE = true;
    //-------------------------//

        for(menuALIVE = true; menuALIVE;)
        {
            menuGEN.menuLoad();
            int const calculation = readNumber();

        if(1 == calculation){
            system("cls");
            cout << "What numbers would you like to add?" << endl;
            int const result = doAddition();
            cout << endl;
            cout << "Your Result is: " << result << endl;
            Sleep(3000);
            system("cls");
        }
        else if(2 == calculation){
            system("cls");
            cout << "What numbers would you like to subtract?" << endl;
            int const result = doSubtraction();
            cout << endl;
            cout << "Your Result is: " << result << endl;
            Sleep(3000);
            system("cls");
        }
        else if(3 == calculation){
            system("cls");
            cout << "What numbers would you like to divide?" << endl;
            int const result = doDivision();
            cout << endl;
            cout << "Your Result is: " << result << endl;
            Sleep(3000);
            system("cls");
        }
        else if(4 == calculation){
            system("cls");
            cout << "What numbers would you like to multiply??" << endl;
            int const result = doMultiplication();
            cout << endl;
            cout << "Your Result is: " << result << endl;
            Sleep(3000);
            system("cls");
        }
        else if(5 == calculation){
            system("cls");

            cout << "Thanks for using my silly calculator, press any button to close." << endl;
            cout << endl;
            Sleep(1500);
            menuALIVE = false;

        }
        else{
        }

    }
}