1
GATE CSE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In the context of abstract-syntax-tree $$(AST)$$ and control-flow-graph $$(CFG),$$ which one of the following is TRUE?
A
In both $$AST$$ and $$CFG,$$ let node $${N_2}$$ be the successor of node $${N_1}.$$ In the input program, the code corresponding to $${N_2}$$ is present after the code corresponding to $${N_1}$$
B
For any input program, neither $$AST$$ nor $$CFG$$ will contain a cycle
C
The maximum number of successors of a node in an $$AST$$ and a $$CFG$$ depends on the input program
D
Each node in $$AST$$ and $$CFG$$ corresponds to at most one statement in the input program
2
GATE CSE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
One of the purposes of using intermediate code in compilers is to
A
make parsing and semantic analysis simpler.
B
improve error recovery and error reporting.
C
increase the chances of reusing the machine-independent code optimizer in other compilers.
D
improve the register allocation.
3
GATE CSE 2003
MCQ (Single Correct Answer)
+1
-0.3
Which of the following statements is FALSE?
A
In statically typed languages, each variable in a program has a fixed type
B
In un-typed languages, values do not have any types
C
In dynamically typed languages, variables have no types
D
In all statically typed languages, each variable in a program is associated with values of only a single type during the execution of the program
4
GATE CSE 1997
MCQ (Single Correct Answer)
+1
-0.3

In the following grammar:

$$\eqalign{ & X:: = X \oplus {Y \over Y} \cr & Y:: = Z*{Y \over Z} \cr & Z:: = id \cr} $$

Which of the following is true?

A
$$' \oplus '$$ is left associative while $$'*'$$ is right associative
B
Both $$' \oplus '$$and $$'*'$$ is left associative
C
$$' \oplus '$$ is right associative while $$'*'$$ is left associative
D
None of the above
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