using System;

​

struct MutableCell { public string value; }

​

public class Program

{

    static void ArgumentPassing(string[] foo, MutableCell bar, ref string baz, ref MutableCell qux)

    {

        foo[0] = "More precisely, for reference types it is call-by-object-sharing, which is a special case of pass-by-value.";

        foo = new string[]{"C# is not pass-by-reference."};

        bar.value = "For value types, it is *not* call-by-sharing.";

        bar = new MutableCell{value = "And also not pass-by-reference."};

        baz = "It also supports pass-by-reference if explicitly requested.";

        qux = new MutableCell{value = "Pass-by-reference is supported for value types as well."};

    }

​

    public static void Main(string[] args)

    {

        var quux = new string[]{"Yes, of course, C# *is* pass-by-value!"};

        var corge = new MutableCell{value = "For value types it is pure pass-by-value."};

        var grault = "This string will vanish because of pass-by-reference.";

        var garply = new MutableCell{value = "This string will vanish because of pass-by-reference."};

        ArgumentPassing(quux, corge, ref grault, ref garply);

        Console.WriteLine(quux[0]);

        // More precisely, for reference types it is call-by-object-sharing, which is a special case of pass-by-value.

        Console.WriteLine(corge.value);

        // For value types it is pure pass-by-value.

        Console.WriteLine(grault);

        // It also supports pass-by-reference if explicitly requested.

        Console.WriteLine(garply.value);

    // Pass-by-reference is supported for value types as well.

    }

}