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  1.     using System;
  2.     using System.Diagnostics.Contracts;
  3.  
  4.     public class Test
  5.     {
  6.     	unsafe static char* MatchChars(char* p, char* p2) {
  7.     	Console.WriteLine("MatchChars:");
  8.                 if (*p2 == '\0') {
  9.                 	Console.WriteLine("return null; (1)");
  10.                     return null;
  11.                 }
  12.                 for (; (*p2 != '\0'); p++, p2++) {
  13.                     if (*p != *p2) {
  14.                         Console.WriteLine("return null; (2)");
  15.                         return null;
  16.                     }
  17.                 }
  18.                 Console.WriteLine("return p;");
  19.                 return p;
  20.             }
  21.  
  22. 	unsafe static int* MatchInts(int* p, int* p2) {
  23.      	Console.WriteLine("MatchInts:");
  24.                 if (*p2 == '\0') {
  25.                 	Console.WriteLine("return null; (1)");
  26.                     return null;
  27.                 }
  28.                 for (; (*p2 != 0); p++, p2++) {
  29.                     if (*p != *p2) {
  30.                         Console.WriteLine("return null; (2)");
  31.                         return null;
  32.                     }
  33.                 }
  34.                 Console.WriteLine("return p;");
  35.                 return p;
  36.             }
  37.  
  38.     	unsafe public static void Main()
  39.     	{
  40.     		fixed (char* p1 = new char[] { '.', '5' } )
  41.     		{
  42.     			fixed (char* p2 = ".")
  43.     			{
  44.     				MatchChars(p1, p2);
  45.     			}
  46.     		}
  47.     		 Console.WriteLine("------------------");
  48.     		fixed (int* p1 = new int[] { 5, 10, 15, 20 } )
  49.     		{
  50.     			fixed (int* p2 = new int [] { 5 } )
  51.     			{
  52.     				MatchInts(p1, p2);
  53.     			}
  54.     		}
  55.     		Console.WriteLine("------------------");
  56.  
  57.     	}
  58.     }
Success #stdin #stdout 0.02s 14564KB
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Standard input is empty
stdout
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MatchChars:
return p;
------------------
MatchInts:
return p;
------------------
https://ideone.com/cAYibm
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
public

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