IBM Programming with IBM Enterprise PL/I Sample Questions:
1. CORRECT TEXT
What happens after end of file has been reached in the following code, assuming the input file has
more than 100 records?
DCL INF FILE RECORD INPUT;
DCL INFIELD CHAR(100) BASED(P);
DCL P PTR;
DCL EOF BIT(1) INIT('0'B);
ON ENDFILE(INF) BEGIN;
ALLOC INFIELD;
INFIELD = 'EOF REACHED';
END;
OPEN FILE(INF);
READ FILE(INF) SET(P);
DO WHILE(^EOF);
READ FILE(INF) SET(P);
EOF = '1'B;
END;
A) INFIELD will have a value 'EOF REACHED' and the program ends
B) End of file will never be reached
C) Infinite loop
D) Runtime error because there is no CLOSE statement
2. CORRECT TEXT
Given the following piece of code, how many times is the loop executed?
DCLI FIXED BIN (31);
I = 20;
DO UNTIL (I = 0); PUT (I);
I = I - 3;
END;
A) less than 6 times
B) more than 7 times
C) 6
D) 7
3. CORRECT TEXT
Given the following DECLARE statement, how many bytes will be allocated to A?
DCL
1 A UNION,
2 C8 CHAR(8),
2 XB FIXED BIN(31),
2 BX BIT(16);
A) 8
B) 4
C) 2
D) 14
4. CORRECT TEXT
Given the following code, what will happen if the variable MAX has a value larger than 32767?
DCLI FIXED BIN (15);
DCL MAX FIXED BIN (31);
DO I = 1 TO MAX;
A) The loop will stop executing when I reaches a value of 32767.
B) The loop will stop executing when I reaches a value equivalent to MAX + 1.
C) The loop will stop executing when I reaches the value in MAX.
D) The loop will stop executing with an ABEND or run infinitely.
5. CORRECT TEXT
What is the result, if any, of executing the following code?
DCL B DEC FIXED(15,3) INIT(12345.12);
DCL C PlC '9999999999' INIT (0);
C = B;
A) The result in C is
12345 with 5 leading zeroes.
B) There is no result, because B contains a decimal point.
C) There is no result, because DEC FIXED cannot be assigned to PlC.
D) The result in C is 1234512 with 3 leading zeroes.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: A |
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