ここで、iterator-id 段落 GetEven を使用して、m-FibonacciArray に偶数を戻します。
class-id Fibonacci.Class1 static. data division. working-storage section. 01 m-FibonacciArray binary-long occurs any static. method-id FibEvens static. procedure division. set content of m-FibonacciArray to (1 2 3 5 8 13 21 34 55 89 144) display "Even numbers in the Fibonacci sequence:" perform varying evenNumber as binary-long through self::GetEven display evenNumber end-perform goback. end method. iterator-id GetEven yielding res as binary-long static. perform varying i as binary-long through m-FibonacciArray if i b-and 1 = 0 set res to i goback end-if end-perform stop iterator *> stops the iterator explicitly end iterator. *> end of method stops the iterator implicitly end class.
以下は同様の例ですが、self 構文を使用して現在のクラス (反復子があるクラス) から直接反復できるようにしたものです。
       class-id Fibonacci.Class2.
       method-id main static (args as string occurs any).
           try
               declare max as binary-long = binary-long::Parse(args[0])
               declare fibs = new Fibonacci(max)
               perform varying i as binary-long through fibs
                   display i
               end-perform
           catch
               display "Bad command line"
           end-try
       end method.
       end class.
       class-id Fibonacci.
       01 MaxNumber binary-long.
       method-id new (#max as binary-long).
           set MaxNumber to #max
       end method.
       iterator-id self yielding res as binary-long.
           set res to 1
           exit iterator
           declare frst as binary-long = 0
           declare second as binary-long = 1
           perform until exit
               compute res = frst + second
               if res > MaxNumber
                   stop iterator
               end-if
               move second to frst
               move res to second
               exit iterator
           end-perform
       end iterator.
       end class.
 
		反復子のサンプルも参照してください。このサンプルは、Start > All Programs > Micro Focus Visual COBOL > Samples、COBOL for .NET の場合の場合 。 に用意されています。