Swap two values : Parameters Passing : Language Basics C# Source Code

Swap two values

    

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Swap two values. 
 
using System; 
 
class Swap { 
  // This method now changes its arguments. 
  public void swap(ref int a, ref int b) { 
    int t; 
  
    t = a; 
    a = b; 
    b = t; 
  } 
} 
 
public class SwapDemo { 
  public static void Main() { 
    Swap ob = new Swap(); 
 
    int x = 10, y = 20; 
 
    Console.WriteLine("x and y before call: " + x + " " + y); 
 
    ob.swap(ref x, ref y);  
 
    Console.WriteLine("x and y after call: " + x + " " + y); 
  } 
}

           
       
    
   
  
   

Related in same category :
• Parameter out and reference
• Passing Parameters By Value and By Ref
• Objects can be passed to methods
• Simple types are passed by value
• Objects are passed by reference
• Use ref to pass a value type by reference
• Use out
• Use two out parameters
• Swap two references
• Demonstrate params