Public Class App
    Public Shared Sub Main()
        ' ArgumentException is not thrown because 10 is an even number.
        Console.WriteLine("10 divided by 2 is {0}", DivideByTwo(10))
        Try 
            ' ArgumentException is thrown because 7 is not an even number.
            Console.WriteLine("7 divided by 2 is {0}", DivideByTwo(7))
        Catch Ex As ArgumentException
            ' Show the user that 7 cannot be divided by 2.
            Console.WriteLine("7 is not divided by 2 integrally.")
        End Try
    End Sub

    Private Shared Function DivideByTwo(ByVal num As Integer) As Integer
        ' If num is an odd number, throw an ArgumentException.
        If ((num And 1)  _
                    = 1) Then
            Throw New ArgumentException("Number must be even", "num")
        End If
        Return (num / 2)
    End Function
End Class
' This code produces the following output.
' 
' 10 divided by 2 is 5
' 7 is not divided by 2 integrally.

using System;

public sealed class App 
{
    static void Main() 
    {
        // ArgumentException is not thrown because 10 is an even number.
        Console.WriteLine("10 divided by 2 is {0}", DivideByTwo(10));
        try 
        {
             // ArgumentException is thrown because 7 is not an even number.
             Console.WriteLine("7 divided by 2 is {0}", DivideByTwo(7));
        }
        catch (ArgumentException)
        {
            // Show the user that 7 cannot be divided by 2.
            Console.WriteLine("7 is not divided by 2 integrally.");
        }
    }

    static int DivideByTwo(int num) 
    {
        // If num is an odd number, throw an ArgumentException.
        if ((num & 1) == 1)
            throw new ArgumentException("Number must be even", "num");

        // num is even, return half of its value.
        return num / 2;
    }
}


// This code produces the following output.
// 
// 10 divided by 2 is 5
// 7 is not divided by 2 integrally.

using namespace System;

int DivideByTwo(int num)
{
    // If num is an odd number, throw an ArgumentException.
    if ((num & 1) == 1)
    {
        throw gcnew ArgumentException("Number must be even", "num");
    }
    // num is even, return half of its value.
    return num / 2;
}

int main()
{
    // ArgumentException is not thrown because 10 is an even number.
    Console::WriteLine("10 divided by 2 is {0}", DivideByTwo(10));
    try
    {
        // ArgumentException is thrown because 7 is not an even number.
        Console::WriteLine("7 divided by 2 is {0}", DivideByTwo(7));
    }
    catch (ArgumentException^)
    {
        // Show the user that 7 cannot be divided by 2.
        Console::WriteLine("7 is not divided by 2 integrally.");
    }
}

// This code produces the following output.
//
// 10 divided by 2 is 5
// 7 is not divided by 2 integrally.