Right justifying numerical input in a character

Sometimes we need to right justify a numerical input in a character field. We can use four lines in RPG/400 to do so. Assuming the length of FIELD is 8. Its value is '1234 '. And the number of '9' in the second line is the length of FIELD + 1. The final result of FIELD is ' 1234' after user press Enter. 

   
C           ' '       SCAN FIELD     X       20     99 
C           9         SUB  X         Y       10        
C                     CAT  FIELD:Y   RESET   8 P       
C                     MOVE RESET     FIELD     P

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This was first published in August 2001

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