1
GATE CSE 2016 Set 1
Numerical
+2
-0
The attributes of three arithmetic operators in some programming language are given below.

Operator Precedence Associativity Arity
+ High Left Binary
_ Medium Right Binary
* Low Left Binary

The value of the expression $$2 - 5 + 1 - 7 * 3$$ in this language is _______________.

2
GATE CSE 2015 Set 3
+2
-0.6
Consider the following grammar $$G$$

\eqalign{ & \,\,\,\,\,\,\,S \to \,\,\,\,\,\,\,F|H \cr & \,\,\,\,\,\,F \to \,\,\,\,\,\,\,p|c \cr & \,\,\,\,\,\,H \to \,\,\,\,\,\,\,d|c \cr}

where $$S, F$$ and $$H$$ are non-terminal symbols, $$p, d,$$ and $$c$$ are terminal symbols. Which of the following statement(s) is/are correct?

$$\,\,\,\,\,\,\,S1.\,\,\,\,\,\,\,LL\left( 1 \right)\,\,$$ can parse all strings that are generated using grammar $$G$$
$$\,\,\,\,\,\,\,S2.\,\,\,\,\,\,\,LR\left( 1 \right)\,\,$$ can parse all strings that are generated using grammar $$G$$

A
Only $$S1$$
B
Only $$S2$$
C
both $$S1$$ and $$S2$$
D
Neither $$S1$$ nor $$S2$$
3
GATE CSE 2014 Set 1
+2
-0.6

A canonical set of items is given below

\eqalign{ & S \to L. > R \cr & Q \to R. \cr}

On input symbol < the set has

A
a shift-reduce conflict and a reduce-reduce conflict.
B
a shift-reduce conflict but not a reduce-reduce conflict.
C
a reduce-reduce conflict but not a shift-reduce conflict.
D
neither a shift-reduce nor a reduce-reduce conflict.
4
GATE CSE 2013
+2
-0.6

Consider the following two sets of LR(1) items of an LR(1) grammar.

\eqalign{ & X \to c.X,\,c/d\,\,\,\,\,\,\,\,X \to c.X,\ \cr & X \to .cX,c/d\,\,\,\,\,\,\,\,X \to .cX,\ \cr & X \to .d,c/d\,\,\,\,\,\,\,\,\,\,\,X \to .d,\ \cr}

Which of the following statements related to merging of the two sets in the corresponding LALR parser is/are FALSE?

1. Cannot be merged since look aheads are different.
2. Can be merged but will result in S-R conflict.
3. Can be merged but will result in R-R conflict.
4. Cannot be merged since goto on c will lead to two different sets.

A
1 only
B
2 only
C
1 and 4 only
D
1, 2, 3 and 4
GATE CSE Subjects
EXAM MAP
Medical
NEET