static int PlusMethod(int x, int y)
{
    return x + y;
}

static double PlusMethod(double x, double y)
{
    return x + y;
}

static void Main()
{
    int myNum1 = PlusMethod(8, 5);
    double myNum2 = PlusMethod(4.3, 6.26);
    Console.WriteLine("int: " + myNum1);
    Console.WriteLine("double: " + myNum2);
}
// Output:
// int: 13
// double: 10.56