SetConsoleTitle("Simple Calculator");
    int firstvalue, secondvalue, choose;
    printf("Enter 1st value \n");
    cin >> firstvalue;
    printf("Enter 2st value \n");
    cin >> secondvalue;
    printf("-------------------------- \n");
    printf("Select Operator to use:\n");
    printf("1.] Add it\n");
    printf("2.] Subtract it\n");
    printf("3.] Multiply it\n");
    printf("4.] Divide it\n");
    cin >> choose;
    switch (choose)
    {
    case 1:
        cout << "Equals = " << firstvalue + secondvalue << endl;
        break;
    case 2:
        cout << "Equals = " << firstvalue - secondvalue << endl;
        break;
    case 3:
        cout << "Equals = " << firstvalue * secondvalue << endl;
        break;
    case 4:
        cout << "Equals = " << firstvalue / secondvalue << endl;
        break;
    default:
        break;
    }