Question

How to use ref keyword in C#

Answer 1

using System;

class Program
{
    public static void ProcessNumber(ref int num) {
        num = 999;
    }     
    static void Main() {
        int x = 3;

        ProcessNumber(ref x); 
           
        Console.WriteLine(x);
    }
}




/*
run:
  
999
  
*/

 

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