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This, is the pointer variable of the compiler which always holds the current active object’s address.

C++ does supports exception handling. try, catch & throw are keyword used for the same.

A function which is not a member of the class but still can access all the member of the class is called so. To make it happen we need to declare within the required class following the keyword ‘friend’.

No, we need to use free() of C language for the same.

Yes, as C is the subset of C++, we can all the functions of C in C++ too.

‘delete’ operator is used to release the dynamic memory which was created using ‘new’ operator.

‘new’ is the operator can be used for the same.

Every class does have a constructor provided by the compiler if the programmer doesn’t provides one and known as default constructor. A programmer provided constructor with no parameters is called as default constructor. In such case compiler doesn’t provides the constructor.

A destructor is the member function of the class which is having the same name as the class name and prefixed with tilde (~) symbol. It gets executed automatically w.r.t the object as soon as the object loses its scope. It cannot be overloaded and the only form is without the parameters.

Scope resolution operator (::)

Private & Protected.

cin, cout, cerr and clog.

No, it’s a class from STL (Standard template library).

bool, is the new primitive data type introduced in C++ language.

No, Defining a class/structure is just a type definition and will not allocated memory for the same.

Dot (.) and Arrow ( -> )

wchar_t

A static member function can be invoked using the class name as it exits before class objects comes into existence. It can access only static members of the class.

A static variable does exit though the objects for the respective class are not created. Static member variable share a common memory across all the objects created for the respective class. A static member variable can be referred using the class name itself.

A reference variable is an alias name for the existing variable. Which mean both the variable name and reference variable point to the same memory location. Therefore updation on the original variable can be achieved using reference variable too.

A class with at least one pure virtual function is called as abstract class. We cannot instantiate an abstract class.

A virtual function with no function body and assigned with a value zero is called as pure virtual function.

Shallow copy does memory dumping bit-by-bit from one object to another. Deep copy is copy field by field from object to another. Deep copy is achieved using copy constructor and or overloading assignment operator.

A constant class object’s member variable can be altered by declaring it using mutable storage class specifier. Applicable only for non-static and non-constant member variable of the class.

The following are storage classes supported in C++

auto, static, extern, register and mutable

Storage class specifies the life or scope of symbols such as variable or functions.

A function prefixed with the keyword inline before the function definition is called as inline function. The inline functions are faster in execution when compared to normal functions as the compiler treats inline functions as macros.

Declaring a variable volatile directs the compiler that the variable can be changed externally. Hence avoiding compiler optimization on the variable reference.

If a class member is protected then it is accessible in the inherited class. However, outside the both the private and protected members are not accessible.

Single, Multilevel, Multiple, Hierarchical and Hybrid.

Object Oriented Programming System.