Q. A relocatable program form is one which

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Q. Which of the following module does not incorporate initialization of values changed by the module?

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Q. Dynamic linking can cause security concerns because

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Q. S -> C C
C -> eC | d

The grammar is

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Q. S -> id: = E ”
newtemp ();

gen(t . place . place;); .place t} ”

.place .place;}

For the statement ‘X: = Y + Z ’,

the 3-address code sequence generated by this definition is

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Q. If the programming language uses static scoping and call by need parameter passing mechanism, the values printed by the above program are

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Q. If dynamic scoping is used and call by name mechanism is used, the values printed will be

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Q. P x =new Q();

Q y =new Q();

P z =new Q();

x. f (1);((P) y). f (1);

z.f(1);

The output is

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Q. Which of the following is NOT an advantage of using shared, dynamically linked libraries as compared to statically linked libraries?

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Q. Which grammar violate rules of an operator grammar?
(i) P-> QR

(ii) P -> Q s R

(iii) P -> ε

(iv) P ->Q t

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Q. Consider the grammar rule
E -> E1 − E2 for arithmetic expressions.

If E1 and E2 do not have any common sub expression, in order to get the shortest possible code

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Q. The grammar
A ->AA |( A)| ε
is not suitable for predictive-parsing because the grammar is

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Q. Consider the grammar
E ->E + n | E # n | n

For a sentence n + n, form of the reduction are

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Q. S -> (S)| a
Let the number of states in SLR(1), LR(1) and LALR(1) parsers for the grammar n1 n2 and n3 respectively.

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Q. Consider line 3:

Int main()

{ int 1,N;

Fro (I,1 N,1);

}

Identify the compiler’s response about this line while creating the object-module

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Q. Which one of the following is true about the action of yacc for the given grammar?

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Q. What precedence and associativity properties does the generated parser realize?

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Q. Consider the following grammar.
S > S * E

S > E

E > F + E

E > F

F > id

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

(i) S -> S * .E

(ii) E -> F . + E

(iii) E -> F + .E

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

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Q. Consider the following grammar
S > FR

R > * S | ε

F > id

In the predictive parser table, M , of the grammar the entries M [ S, id] and M [ R,$] respectively

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Q. Consider the following translation scheme.
S > ER

R > * E{print{’ * ’);

R | f

E > F + E{print(’ + ’); | F F > (S) | id{print(id.value);}

Here id is a taken that represents an integer and id, value represents the corresponding integer value. For an input ‘2 * 3 + 4’, this translation scheme prints

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