// Example application for code from
// https://jonskeet.uk/csharp/parameters.html
// 
// To compile the code, run (from a command prompt
// with the appropriate environment variables set):
// csc Example8.cs
// 
// To run the code after compilation, just run Example8.exe

using System;
using System.Text;

public class Example8
{
    static void Foo (out int x)
    {
        // Can't read x here - it's considered unassigned
        
        // Assignment - this must happen before the method can complete normally
        x = 10;
        
        // The value of x can now be read:
        int a = x;
    }

    public static void Main (string[] args)
    {
        // Declare a variable but don't assign a value to it
        int y;
        
        // Pass it in as an output parameter, even though its value is unassigned
        Foo (out y);
        
        // It's now assigned a value, so we can write it out:
        Console.WriteLine (y);
    }
}