class BreakTest
  {
      static void Main()
      {
          for (int i = 1; i <= 100; i++)
          {
              if (i == 5)
              {
                  break;
              }
              Console.WriteLine(i);
          }
  
          // Keep the console open in debug mode.
  
          Console.WriteLine("Press any key to exit.");
          Console.ReadKey();
      }
  }
  /* 
 输出:
    1
    2
    3
    4  
*/