C++ Programming Practice Test 8

1. Which of the following is corect way of constructing bitset using binary string?

bitset<size> b(12);

bitset<size> b;

bitset<size> b(float(12));

bitset<size> b(string("1100"));

2. What is the use of sum() function in Valarray?

Applies the manipulation provided to all the elements of the array

Returns new array after shifting elements by the given number

Returns the summation of all elements of Valarray

Returns new array after circular shifting elements by the given number

3. Which function is used to get the real part of the complex number?

real_p()

real()

img_p()

imag_p()

4. What is the correct syntax of constructing any using copy initialization?

any <type>variable_name = value;

any variable_name(value);

any variable_name = value;

any variable_name;
variable_name = value;

5. What is the use of tie() function?

Used to delete elements

Used to check whether two tuples are the same or not

Used to replace elements

Used to unpack the values of a tuple

6. What happens when no argument is supplied to reset() function?

All bits are set to 1 in a bitset

All alternate bits are set to 0 in a bitset

First bit is set to 0

All bits are set to 0 in a bitset

7. What is Valarray in C++?

Container for efficient value conversion of array

Container for efficient printing of the array

Container for efficient type conversion of array

Container for efficient operations on an array

8. What happens when only one argument is supplied to set() function?

Bit corresponding to an argument is set to 1

All alternate bits are set to 1 in a bitset

All bits are set to 1 in a bitset

First bit is set to 1

9. Given below classes which of the following are the possible row entries in vtable of D2 class?

class Base
{
    public:
    virtual void function1() {};
    virtual void function2() {};
};
class D1: public Base
{
    public:
    virtual void function1() {};
};
class D2: public Base
{
    public:
    virtual void function2() {};
};

D2::function1() and Base::function2()

Base::function1() and Base::function2()

Base::function1() and D2::function2()

D2::function1() and D2::function2()

10. Which type of relationship is modelled by Inheritance?

Belongs-to relationship

Part-Of relationship

Is-A relationship

Has-A relationship