using System;

​

public class Test

{

    static void Foo(int x, int y = 5)

    {

        Console.WriteLine("Foo(int x, int y = 5)");

    }

    static void Foo(double x)

    {

        Console.WriteLine("Foo(double x)");

    }

​

    public static void Main()

    {

        Foo(10);

    }

}