RPG - CAT - RPG School

CAT is used in RPGIV code to concatenate two fields. The fields can be both variables and constants.

Example RPGIV Fixed Format

D Message                       52A                 
 *                                                  
C     'FirstName '  Cat       'LastName'    Message
C     Message       Dsply 
 *
 * The text "FirstName LastName" will be shown on the screen

D Message 52A

C 'FirstName ' Cat 'LastName' Message

C Message Dsply

* The text "FirstName LastName" will be shown on the screen

This can be done much more effective in RPGIV code using EVAL.