A student wrote two context-free grammars G1 and G2 for generating a single C-like array declaration. The dimension of the array is at least one. For example, int a[10] [3] ; The grammars use D as the start symbol, and use six terminal symbols int; id[ ] num Grammar G1 Grammar G2 D → int L; D → int L; L → id[E L → idE E → num] E → E[num] E → num][E E → [num] Which of the grammars correctly generate the declaration mentioned above?

What is the output of following program? abstract class Sum { public abstract int sumOfTwo(int n1, int n2); public abstract int sumOfThree(int n1, int n2, int n3); public void disp( ){ System.out.println("Method of class Sum"); } } class DemoAbstract1 extends Sum { public int sumOfTwo(int num1, int num2) { return num1+num2; } public int sumOfThree(int num1, int num2, int num3) { return num1+num2+num3; } public static void main(String args[ ]){ Sum obj = new DemoAbstract1( ); System.out.println(obj.sumOfTwo(3, 7)); System.out.println(obj.sumOfThree(4, 3, 19)); obj.disp( ); } }

A

10

26

Method of class Sum

B

26

10

Method of class Sum

C

Method of class Sum

26

10

D

Error

Which of the following statements is/are TRUE? (a) The grammar S → SS | a is ambiguous. (Where S is the start symbol) (b) The grammar S → 0S1 | 01S |e is ambiguous. (The special symbol e represents the empty string) (Where S is the start symbol) (c) The grammar (Where S is the start symbol) S → T / U T → x S y | xy | ϵ U → yT generates a language consisting of the string yxxyy.

A

Only (a) and (b) are TRUE.

B

Only (a) and (c) are TRUE.

C

Only (b) and (c) are TRUE.

D

All of (a), (b) and (c) are TRUE.

Which of the following php statement/statements will store 111 in variable num?
1. int $num = 111;
2. int mum = 111;
3. $num = 111;
4. 111 = $num;

A

Both 1 and 2

B

All of the mentioned

C

Only 3

D

Only 1

Which of the following is good coding practice to determine oddity?
i)

public boolen abc(int num){return num % 2 == 1;}

ii)

public boolean xyz(int num){return (num & 1)!= 0; }

A

i

B

ii

C

(i) causes compilation error

D

(ii) causes compilation error

In an examination, a student can choose the order in which two questions (QuesA and QuesB) must be attempted. - If the first question is answered wrong, the student gets zero marks. - If the first question is answered correctly and the second question is not answered correctly, the student gets the marks only for the first question. - If both the questions are answered correctly, the student gets the sum of the marks of the two questions. The following table shows the probability of correctly answering a question and the marks of the question respectively. question Probability of answering correctly marks QuesA 0.8 10 QuesB 0.5 20 Assuming that the student always wants to maximize her expected marks in the examination, in which order should she attempt the questions and what is the expected marks for that order (assume that the questions are independent)?

A

First QuesB and then QuesA. Expected marks 14

B

First QuesB and then QuesA. Expected marks 22

C

First QuesA and then QuesB. Expected marks 14.

D

First QuesA and then QuesB. Expected marks 16.

Consider the following grammar G: P → Q + R | Q – R | Q | R Q → q | r R → r | s where P, Q, and R are non-terminal symbols, and q, r, and s are terminal symbols. Which of the following statement(s) is/are correct? S1. LL(1) can parse all strings that are generated using grammar G S2. LR(1) can parse all strings that are generated using grammar G

A

Neither S1 nor S2

B

Only S2

C

Only S1

D

Both S1 and S2

Consider the following grammar G S → F | H F → p | c H → d | c 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(1) can parse all strings that are generated using grammar G S2. LR(1) can parse all string that are generated using grammar G

A

Only S1

B

Only S2

C

Both S1 and S2

D

Neither S1 nor S2

What is the right choice, if the following loop is implemented?

void main(){ int num = 0; do{ --num; printf("%d", num); }while( ++num >= 0 );}

A

A run time error will be generated.

B

The program will not enter into the loop.

C

There will be a compilation error reported.

D

The loop will run infinitely many times.

E

Prints the value of 0 one time only.

Consider the function fun1 shown below: int fun1 (int num) { int count = 0; while (num) { count ++; num ≫= 1; } return (count); } The value returned by fun1 (435) is

A

10

B

9

C

8

D

7

What will be the content of num, after code execution; if before code execution num has value 200?

If num500 Num=num*3;Endif

A

0

B

200

C

400

D

600

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