High LEVEL QUESTIONS From C C++ for ssc IMD

1.       What will be the values of x, m and n after the execution of the following statements?

int x, m, n;

m = 10;

n = 15;

x = ++m + n++;

(A) x=25, m=10, n=15

(B) x=26, m=11, n=16

(C) x=27, m=11, n=16

(D) x=27, m=10, n=15

Answer: B

2.       Which of the following will produce a value 10 if x = 9.7?

(A) floor(x)

(B) abs(x)

(C) log(x)

(D) ceil(x)

Answer: D

3.       The major goal of inheritance in c++ is:

(A) To facilitate the conversion of data types.

(B) To help modular programming.

(C) To extend the capabilities of a class.

(D) To hide the details of base class.

Answer: C

4.       Consider the following class definitions:

class a

{

};

class b: protected a

{

};

What happens when we try to compile this class?

(A) Will not compile because class body of a is not defined.

(B) Will not compile because class body of b is not defined.

(C) Will not compile because class a is not public inherited.

(D) Will compile successfully.

Answer: D

5.       Which of the following expressions is illegal?

(A) (10|6).

(B) (false && true)

(C) bool (x) = (bool)10;

(D) float y = 12.67;

Answer:  C

6.     The actual source code for implementing a template function is created when

(A) The declaration of function appears.

(B) The function is invoked.

(C) The definition of the function appears.

(D) None of the above.

Answer: B

7.       An exception is caused by

(A) a runtime error.

(B) a syntax error.

(C) a problem in the operating system.

(D) a hardware problem.

Answer: A

8.       Which of the following shows the correct hierarchy of arithmetic operations in C ?

(A) / + * -

(B) * - / +

(C) + - / *

(D) * / + -

Answer: D

9.       What will be the value of d if d is a float after the operation d = 2 / 7.0?

(A) 0

(B) 0.2857

(C) Cannot be determined

(D) None of the above

Answer: B

10.    A constructor

(A) Constructs new data type

(B) Enables the initialization of an object as it is created

(C) Obtain memory for a new variable

(D) None of the above

Answer: B