Difference between open subroutine and closed subroutine in system programming
Answers
In closed subroutine a subroutine stored outside the main routine can be connected to it by linkages at one or more locations.
whereas in open subroutine is a set of computer instructions i.e. a subroutine that performs some particular program and insert them directly each and every time that particular function is required
Difference between open subroutine and closed subroutine in system programming:
Open subroutine:
An open subroutine or macro description is one whose code is inserted (flow continues) into the main program. Therefore, if four times were called the same open subroutine, it would appear in the calling system in four different places.
Closed subroutine:
A closed subroutine can also be stored outside the main routine, and monitor transfers to the subroutine. Associated with the closed subroutine are the two tasks the main program should perform a transfer of control & transfer of data.
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