C# Keyword Code

C# Parameters Ref

using System;

class Program
{
    static void Main()
    {
 int val = 0;

 Example1(val);
 Console.WriteLine(val); // Still 0!

 Example2(ref val);
 Console.WriteLine(val); // Now 2!

 Example3(out val);
 Console.WriteLine(val); // Now 3!
    }

    static void Example1(int value)
    {
 value = 1;
    }

    static void Example2(ref int value)
    {
 value = 2;
    }

    static void Example3(out int value)
    {
 value = 3;
    }
}

Output

0
2
3