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IBM C9050-042 Exam Syllabus Topics:

IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Requirement:
The function LEAPYEAR evaluates a given 4-digit number and returns '1'B if it is a leap year, '0'B if it is
not. This function is supposed to work for the years 2004 to 2015.
Leap years occur every four years, except for years ending in 00 that are not divisible by 400. Which of
the following solutions meets the requirement and does NOT need to be changed if the requirement
changes to: The function is supposed to work for the years 1900 to 3000.

A) LEAPYEAR:PROC(YEAR) RETURNS(BIT(1));
DCL YEAR PlC '9999';
DCL (MOD,VERIFY) BUILTIN;
SELECT;
WHEN (VERIFY(YEAR '0123456789') ^= 0) RETURN('0'B);
WHEN (MOD(YEAR,400) = 0) RETURN('l'B); WHEN (MOD(YEAR,100) = 0) RETURN('0'B);
WHEN (MOD(YEAR,4) = 0) RETURN('1'B); OTHER RETURN('0'B);
END;
END LEAPYEAR;
B) LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));
DCL YEAR PlC '9999';
DCL VERIFY BUILTIN;
IFVERIFY(YEAR,0123456789)^= 0 THEN RETURN('0'B);
SELECT(YEAR);
WHEN (2004) RETURN('1'B);
WHEN (2008) RETURN('1'B);
WHEN (2012) RETURN('1'B);
OTHER RETURN('0'B);
END;
END LEAPYEAR;
C) LEAPYEAR:PROC(YEAR) RETURNS(BIT(1));
DCL YEAR PlC '9999';
DCL (MOD,VERIFY) BUILTIN;
SELECT;
WHEN (VERIFY(YEAR '0123456769') ^= 0) RETURN('0'B); WHEN (MOD(YEAR,100) = 0)
RETURN('0'B);
WHEN (MOD(YEAR,400) = 0) RETURN('1'B);
WHEN (MOD(YEAR,4) = 0) RETURN('1'B);
OTHERRETURN('0'B);
END;
END LEAPYEAR;
D) LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));
DCL YEAR PlC '9999';
DCL (MOD,VERIFY) BUILTIN;
SELECT;
WHEN (VERIFY(YEAR,'0l23456789') ^= 0) RETURN('0'B);
WHEN (MOD(YEAR,100) = 0)RETURN('0'B);
WHEN (MOD(YEAR,4) = 0)RETURN('1'B);
OTHERRETURN('0'B);
END;
END LEAPYEAR;

2. Which of the following declarations uses the LEAST memory?
DCL 1 S1 ALIGNED,
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5),
2 D BIN FIXED(15);
DCL 1 S2 UNALIGNED,
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5),
2 D BIN FIXED(15);
DCL 1 S3 ALIGNED,
2 B BIN FIXED(31),
2 A CHAR(3),
2 D BIN FIXED(15),
2 C DEC FIXED(5);
DCL 1 S4 ALIGNED,
2 D BIN FIXED(15),
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5);

A) S2
B) S3
C) S1
D) S4

3. A dummy argument is NOT created when a routine is called in which of the following situations?

A) With a constant as parameter
B) With the attributes(s) of the arguments and parameters are not the same
C) Where the attributes(s) of the arguments and parameters are the same
D) Using SUBSTR as one of the arguments

4. What happens after executing the following code, assuming the input file has more than 1 record?
DCL INPFILE FILE RECORD INPUT ENV(VB RECSIZE(100)); DCL P PTR;
DCL B CHAR(100) VARYING BASED(P);
DCLC CHAR(110) VARYING BASED(P);
READ FILE(INPFILE) SET(P);
C=B!! 'EXTENDED
READ FILE(INPFILE) SET(P);

A) The results are unpredictable.
B) ENDFILE condition is raised on the second read.
C) Protection exception because of the reference to B.
D) Two records are read.

5. A program reads an input file into a structure with 20 fields. Fifteen of these are required as parameters in
an external procedure. Which of the following is the most efficient way of passing these parameters?

A) Create a structure, assign the 15 variables to it and pass the address of it in one argument.
B) Create a structure, assign the 15 variables to it and pass it as one argument.
C) Pass 15 variables in a parameter list.
D) Pass the address of the input structure as one argument.

Solutions: