Listing 9-24 extracted from chapter Fundamental concepts of the language

Listing 9-23<     > Listing 9-25

This listing can be compiled with the command line:
csc.exe /target:exe Example_9_24.cs
Errors: 0 Warnings: 0

class Program {
   static void Main() {
      int i = 0;
      goto label2;
   label1:
      i++;
      goto label3;
   label2:
      i--;
      goto label1;
   label3:
      System.Console.WriteLine(i);
   }
}