REXX: Looping in REXX

A loop is a repetitive execution of a set of statements until some conditions are met.

Do I = 1 To 10

   Say "Value of I :" I

End

LEAVE verb leaves the immediate loop after execution.

Do I = 1 To 10 

   If I = 5 then LEAVE

   Say "Value of I :" I

End 

Result would be: 

Value of I : 1

Value of I : 2

Value of I : 3

Value of I : 4

ITERATE verb ignores the statement following it and starts the next iteration in the loop

Do I = 1 To 10 

   If I = 5 then ITERATE

   Say "Value of I :" I

End 

Result would be: 

Value of I : 1

Value of I : 2

Value of I : 3

Value of I : 4

Value of I : 6

.

.

.

Value of I : 10