CS201 Quiz No.2 File 2

Functions declared with the _______________ specifier in a class member list are called friend functions of that class.
protected
private
public
friend

Functions declared with the friend specifier in a class member list are called friend functions of that class. Classes declared with the friend specifier in the member list of another class are called friend classes of that class. 

Public or private keywords can be ____________
written only for once in the class or structure declaration
written multiple times in the class or structure declaration
written only twice in the class declaration
written outside the class

good practice is to write public or private keywords only once in the class or structure declaration, though there is no syntactical or logical problem in writing them multiple times.

The friend keyword provides access _____________.
in one direction only
in two directions
to all classes
to the data members of the friend class only

The friend keyword provides access in one direction only. This means that while OtherClass is a friend of ClassOne, the reverse is not true.

References cannot be uninitialized. Because it is impossible to _______________ 

reinitialize a pointer
reinitialize a reference
initialize a NULL pointer
cast a pointer
References cannot be uninitialized. Because it is impossible to reinitialize a reference, 

new operator can be used for ______________.
only integer data type
only char and integer data types
integer , float, char and double data types
dot operator
Similarly, new operator can be used for other data types like char, float and double etc.

The destructor is used to ______________.

allocate memory
deallocate memory
create objects
allocate static memory

Reference is not really an address it is ______________.

a synonym
an antonym
a value
a number
Difference Between References and Pointers
The reference in a way keeps the address of the data entity. But it is not really an address it is a synonym,

If we want to allocate memory to an array of 5 integers dynamically, the syntax will be _____________.

int *iptr ; iptr = new int[5] ;

integer iptr** ; iptr= new int[5]

int iptr ; iptr= int [5]

iptr= new[5]

Memory allocated from heap or free store _____________________.

can be returned back to the system automatically

can be allocated to classes only

cannot be returned back unless freed explicitly using malloc and realloc

cannot be returned back unless freed explicitly using free and delete operators

The memory allocated from free store or heap is a system resource and is not returned back to the system unless explicitly freed using deleteor free operators.

Operator overloading is to allow the same operator to be bound to more than one implementation, depending on the types of the _________.

Compilers
Operands
Function names
Applications 

Operator overloading is to allow the same operator to be bound to more than one implementation, depending on the types of the operands.

The operator to free the allocated memory using new operator is ________________.

free
del
delete
remove 

The operator to free the allocated memory using new operator is delete. So whenever, we use new to allocate memory, it will be necessary to make use of ‘delete’ to deallocate the allocated memor