• Description:
    LOOP is the infinite loop, it means that everything between the LOOP and ENDLOOP keywords will repeat until RETURN, EXIT or EXITIF keywords are processed.

  • Syntaxes:
    Infinite loops: 
      LOOP
    <statements>
  ENDLOOP

  LOOP DO <statements> // see DO keyword

    Loops repeated <exp> times: 
      LOOP <exp>
    <statements>
  ENDLOOP

  LOOP <exp> DO <statements> // see DO keyword

    where <exp> can be constant, expression, etc.

  • Returning values: 
      a:=LOOP
     EXITIF <exp> IS <texp> // see EXITIF
     ENDLOOP

    Loop is repeated until <exp> is TRUE and then is <texp> copied to a. You can also return multiple return values.

  • Examples:
    This will write 'Hello' ten times: 
      LOOP 10
    PrintF('Hello\n')
  ENDLOOP

  LOOP a:=5
    PrintF('Hello(\d)\n',a)
  ENDLOOP

    This will write: 
      Hello(5)
  Hello(4)
  Hello(3)
  Hello(2)
  Hello(1)