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Explain the action of the following procedure which includes a subroutine procedure within itself. VERIFY TEST_VALUES: PROCEDURE; DCL LENGTH FIXED DEC(3); CALL GET AND_TEST_INPUT; CALL GET_AND_TEST_INPUT GET AND_TEST_INPUT: PROCEDURE; GET LIST(LENGTH); AGAIN: IF LENGTH = 0 THEN GOTO L: IF LENGTH<0| LENGTH>90 THEN DO; PUT LIST('ERROR', LENGTH);GOTO AGAIN; END; * END OF DO GROUP */ END GET_AND_TEST_INPUT; CALL GET_AND_TEST_INPUT;

Explain the action of the following procedure which includes a subroutine procedure within itself. VERIFY TEST_VALUES: PROCEDURE; DCL LENGTH FIXED DEC(3); CALL GET AND_TEST_INPUT; CALL GET_AND_TEST_INPUT GET AND_TEST_INPUT: PROCEDURE; GET LIST(LENGTH); AGAIN: IF LENGTH = 0 THEN GOTO L: IF LENGTH<0| LENGTH>90 THEN DO; PUT LIST('ERROR', LENGTH);GOTO AGAIN; END; * END OF DO GROUP */ END GET_AND_TEST_INPUT; CALL GET_AND_TEST_INPUT;

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Explain the action of the following procedure which includes a subroutine procedure within itself. VERIFY TEST_VALUES: PROCEDURE; DCL LENGTH FIXED DEC(3); CALL GET_AND_TEST_INPUT; CALL GET_AND_TEST_INPUT GET AND TEST_INPUT: PROCEDURE; AGAIN: GET LIST(LENGTH); IF LENGTH = 0 THEN GOTO L; IF LENGTH<0 | LENGTH>90 THEN DO; PUT LIST('ERROR', LENGTH);GOTO AGAIN; END; * END OF DO GROUP */ END GET AND_TEST_INPUT; CALL GET_AND_TEST_INPUT; L-END VERIEY TEST VALUES:
Transcribed Image Text:Explain the action of the following procedure which includes a subroutine procedure within itself. VERIFY TEST_VALUES: PROCEDURE; DCL LENGTH FIXED DEC(3); CALL GET_AND_TEST_INPUT; CALL GET_AND_TEST_INPUT GET AND TEST_INPUT: PROCEDURE; AGAIN: GET LIST(LENGTH); IF LENGTH = 0 THEN GOTO L; IF LENGTH<0 | LENGTH>90 THEN DO; PUT LIST('ERROR', LENGTH);GOTO AGAIN; END; * END OF DO GROUP */ END GET AND_TEST_INPUT; CALL GET_AND_TEST_INPUT; L-END VERIEY TEST VALUES:
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