In COBOL programming, the subroutine needs the following three clauses. With these you can say the module is subroutine or main module.
Here are Hints to Know the Module is Subroutine
- Linkage section
- In procedure division USING
- At the end of program, either, EXIT PROGRAM or GOBACK
With the above clause we can say the given module is Subroutine.
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