PLI Subroutines and top Interview Questions

In PL/I, a Subroutine is called by using CALL statement.

CALL Subrt(x,y,z);

• Subroutines, which are separately compiles from the invoking procedure are called external procedures.
• Each subroutine name should not be more than 8 chars.
• Should not give STOP or EXIT statement in Subroutine. If we give it terminates total program execution. Actually this is main program's responsibility.

In the main program:
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DECLARE Subrt entry;
CALL Subrt(x,y,z);
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In the Subroutine:
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Subrt: Proc(a,b,c)
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END Subrt;