1
GATE CSE 2007
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is a top-down parser?
A
Recursive descent parser.
B
Operator precedence parser.
C
An LR(k) parser.
D
An LALR(k) parser.
2
GATE CSE 2006
MCQ (Single Correct Answer)
+1
-0.3

Consider the following grammar.

$$\eqalign{ & S \to S*E \cr & S \to E \cr & E \to F + E \cr & E \to F \cr & F \to id \cr} $$

Consider the following LR(0) items corresponding to the grammar above.

$$\eqalign{ & (i)\,S \to S*.E \cr & (ii)\,E \to F. + E \cr & (iii)\,E \to F + .E \cr} $$

Given the items above, which two of them will appear in the same set in the canonical sets-of-items for the grammar?

A
(i) and (ii)
B
(ii) and (iii)
C
(i) and (iii)
D
None of the above
3
GATE CSE 2005
MCQ (Single Correct Answer)
+1
-0.3
The grammar $$A \to AA\,|\,\left( A \right)\,|\,\varepsilon $$
is not suitable for predictive-parsing because the grammar is
A
ambiguous
B
left-recursive
C
right-recursive
D
an operator-grammar
4
GATE CSE 2003
MCQ (Single Correct Answer)
+1
-0.3
In a bottom-up evaluation of a syntax directed definition, inherited attributes can
A
always be evaluated
B
be evaluated only if the definition is L- attributed
C
be evaluated only if the definition has synthesized attributes
D
never be evaluated
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