IBM COBOL400 Interview Question:

What is PERFORM? and its types?

Submitted by: Administrator

to execute set of statement elsewhere in the prgram.
types :
perform para-name.
perform para1 until condition.
perform para1 n times.
perform para1 thru para4 until condition.
inline perform.
perform varying i from 1 by 1 until condition.
perform para1 with test before/after until condition.
Submitted by: Administrator