Answer / sudhakar1207

MACRO IS NOT REUSABLE, WHERE AS SUBROUTINE CAN BE REUSABLE.
MACRO DEFINITION WILL REPLACE THE MACRO CALL AT COMPILE TIME, WHERE AS SUBROUTINE CALL WILL TRANSFER THE CONTROL TO THE SUBROUTINE DEFINITION AND EXECUTE IT AND RETURN BACK TO CALLING PROGRAM.
DEBUGGING IS NOT POSSIBLE IN CASE OF MACRO.

Answer / anil salekar

One more difference is Macro has to be defined in the same
calling program whereas subroutine can be in the same
calling program (Subroutine in a program) or can be in
another program (Function Module) .

Answer / sivanagireddy.jinugu

macros can be called first later define.

subroutine be first define later called.

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