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Q:

What is copy constructor?

Answer


Copy constructor is a constructor function with the same name as the class and used to make deep copy of objects.

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Subject: C++

Q:

What are storage qualifiers in C++ ?

Answer

ConstKeyword indicates that memory once initialized, should not be altered by a program.
Volatile keyword indicates that the value in the memory location can be altered even though nothing in the program.
Mutable keyword indicates that particular member of a structure or class can be altered even if a particular structure variable, class, or class member function is constant.

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Subject: C++

Q:

What do you mean by reference variable in c++?

Answer

A reference variable provides an alias to a previously defined variable.
Data -type & reference-name = variable name

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Subject: C++

Q:

what is the use of virtual destructor in c++?

Answer

A destructor is automatically called when the object is destroyed. A virtual destructor in C++ is used primarily to prevent resource leaks by performing a clean-up of the object.

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Subject: C++

Q:

How variable declaration in c++ differs that in c?

Answer

C requires all the variables to be declared at the beginning of a scope but in c++ we can declare variables anywhere in the scope. This makes the programmer easier to understand because the variables are declared in the context of their use.

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Subject: C++

Q:

What are the features of C++ different from C?

Answer

All the features of C are similiar to C++ except some features, such as polymorphism, operator overloading which are supported in C++ but not in C language.

Both C and C++ language is similiar in their functionality but C++ provides with more tools and options.

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Subject: C++

Q:

What are the basic concepts of object oriented programming?

Answer

It is necessary to understand some of the concepts used extensively in object oriented programming.These include


Objects
Classes
Data abstraction and encapsulation
Inheritance
Polymorphism
Dynamic Binding
Message passing

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Subject: C++

Q:

What is C++

Answer

C++ is created by Bjarne Stroustrup of AT&T Bell Labs as an extension of C, C++ is an object-oriented computer language used in the development of enterprise and commercial applications. Microsoft’s Visual C++ became the premier language of choice among developers and programmers.

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Subject: C++