Index a pointer as if it were an array : Pointer Unsafe : Language Basics C# Source Code

    

/*
C#: The Complete Reference 
by Herbert Schildt 

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


// Index a pointer as if it were an array. 
 
using System; 
 
public class PtrIndexDemo { 
  unsafe public static void Main() { 
    int[] nums = new int[10]; 
 
    // index pointer 
    Console.WriteLine("Index pointer like array."); 
    fixed (int* p = nums) { 
      for(int i=0; i < 10; i++)  
        p[i] = i; // index pointer like array 
 
      for(int i=0; i < 10; i++)  
        Console.WriteLine("p[{0}]: {1} ", i, p[i]); 
    } 
 
    // use pointer arithmetic 
    Console.WriteLine("\nUse pointer arithmetic."); 
    fixed (int* p = nums) { 
      for(int i=0; i < 10; i++)  
        *(p+i) = i; // use pointer arithmetic 
 
      for(int i=0; i < 10; i++)  
        Console.WriteLine("*(p+{0}): {1} ", i, *(p+i)); 
    } 
  } 
}