Demonstrate fixed : Pointer Unsafe « Language Basics « C# / C Sharp

1. C# / C Sharp
2. Language Basics
3. Pointer Unsafe

Demonstrate fixed

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/


// Demonstrate fixed. 
 
using System; 
 
class Test { 
  public int num; 
  public Test(int i) { num = i; } 
} 
 
public class FixedCode { 
  // mark Main as unsafe 
  unsafe public static void Main() { 
    Test o = new Test(19); 
 
    fixed (int* p = &o.num) { // use fixed to put address of o.num into p 
 
      Console.WriteLine("Initial value of o.num is " + *p); 
   
      *p = 10; // assign the to count via p 
     
      Console.WriteLine("New value of o.num is " + *p); 
    } 
  } 
}


           
       

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