Compiler Design MCQ with Answers

Compiler Design MCQ with Answers

71) Assume that X and Y are non zero positive integers. What does the following Pascal program segment do?
while X < > Y do
if X > Y then
X : = X - Y
else
Y : = Y - X ;
write (X);

Answer is:

Computes GCD of two numbers

72) A variant record in Pascal is defined by
type varirec = record
number : integer
case(varl, var2)of
var 1 : (x, y : integer);
var2 : (p.q. : real);
end;
end ;
Let an array of 100 records was declared on a machine which uses 4 bytes for an integer and 8 bytes for a real. How much space would the compiler have to reserve for the array ?

Answer is:

2000

73) In a single pass assembler, most of the forward references can be avoided by putting the restriction

Answer is:

that the data segment must be defined after the code segment.

74) The method which merges the bodies of two loops is

Answer is:

loop Jamming

75) Assembly code data base is associated with

Answer is:

assembly language version of the program which is created by the code.

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