Iteration statements

Iteration statements FOR, WHILE, REPEAT along with the quit statement EXIT

Keyword	Example	Description
`FOR`	`FOR i:=0 TO 100 DO SUM:=SUM + a[i] END_FOR; FOR i:=0 TO 100 BY 10 DO IF a[i]>=100 THEN EXIT; END_IF; END_FOR;`	Defined number of loops with preset step width 1 or with user-defined step width Do not use the value of the control variable (i in this example) after the loop is finished because different values have been assigned to it.
`WHILE`	`i:=0; WHILE i<=100 AND a[i]<100 DO i:=i+10; END_WHILE;`	Loop processing while checking the loop condition before the loop
`REPEAT`	`i:=0; REPEAT i:=i+10; UNTIL i>100 OR a[i]>=100 END_REPEAT;`	Loop processing while checking the loop condition after the loop
`EXIT`	`EXIT;`	Non-conditional exiting of the loop