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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. The following program was written to copy a dataset with record length of 100 to another dataset. If this
requirement has not been fulfilled, which is the most likely reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL INSTRUC CHAR(100);
DCL EOF_IN BIT(1) INIT('0'B);
ON ENDFILE(DDIN) EOF_IN = '1'B;
DO UNTIL (EOF_IN);
READ FILE (DDIN) INTO(INSTRUC);
WRITE FILE(DDOUT) FROM(INSTRUC);
END;

A) The code fulfills the requirement.
B) The code does not fulfill the requirement because too many records will be written to the output
dataset.
C) The code does not fulfill the requirement because the OPEN statements are missing.
D) The code does not fulfill the requirement because the input structure is the same as the output
structure.

2. Prerequisite:
A sorted input dataset with record length 100 contains at least one record for each of the values '1', '2', '3'
in the first byte. The applied sort criteria is 1,100,ch,a.
Requirements:
1 .) All records with '1' in the first byte must be ignored.
2 .) All records with '2' in the first byte must be written to the output dataset.
3 .) If there is a '3' in the first byte, the read iteration must be left.
4 .) The program must not abend or loop infinitely.
If the code below does not fulfill the specifications provided above, which of the following is the most likely
reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL 1 INSTRUC,
3 A CHAR(1),
3 * CHAR(99);
DCL EOF_IN BIT(1) INIT('0'B);
DCL (Z1,Z2,Z3,ZO) BIN FIXED(31) INIT(0);
ON ENDFILE(DDIN) EOF_IN = '1'B;
READ FILE(DDIN) INTO (INSTRUC);
LOOP: DO WHILE (^EOF_IN);
SELECT(INSTRUC.A);
WHEN('1') DO;
Z1 +-= Z1;
ITERATE LOOP;
END;
WHEN('3') DO;
Z3 = Z3+1;
LEAVE LOOP;
END;
WHEN('2') DO;
Z2 = Z2+1;
WRITE FILE(DDOUT) FROM(INSTRUC);
END;
OTHER DO;
ZO = ZO+1;
PUT SKIP LIST(INSTRUC.A);
END;
END;/*select*/
READ FILE(DDIN) INTO(INSTRUC);
END ;/*loop*/

A) The code fulfills the requirement.
B) The code does not fulfill the requirement because the last record with '2' in the first byte will be written twice to the output dataset.
C) The code does not fulfill the requirement because not all records with '2' in the first byte will be written to the output dataset.
D) The code does not fulfill the requirement because the program will loop infinitely.

3. Given the following pseudocode inside a loop, where should the COMMIT action be placed assuming that
there is always a one-to-many relationship between header and detail tables?
1 Find header row 2 IF found 3 Update header row 4 Find detail row 5 IF found THEN 6 Update detail
rows 7 ELSE 8 ENDIF 9 ENDIF

A) After lines 3, 8, and 9
B) After line 3
C) After line 8
D) After line 6

4. Which of the following compiler options should be checked first when addressing performance issues in a
PL/I program?

A) ARCH and MAXSTMT
B) RENT and MAXMEM
C) OPT and DEFAULT
D) ATTRIBUTES and LIST

5. If the PROC name is less than 8 characters, what ENTRY point should be specified for a PL/I routine
which will be FETCHed?

A) PLISTART
B) The PROC name followed by a '1'
C) The PROC name
D) CEESTART L

Solutions: