Object Oriented Programming

Copy constructor cannot be used – When an object of the class is returned by value. When an object of the class is passed by values as an argument. When …

What is this pointer? Provide necessary USAGE of THIS pointer. In C++, this is a keyword that refers to the current instance of the class. There can be 3 usages …

Exception handling in C++ is a process to handle run time errors, we perform exception handling so the normal flow of the application can be maintained even after run time …

STL(Structured Template Library): STL is a set of C++ template classes that provided common data structure and functions like lists, stack, arrays etc. STL has 3 components – Container Algorithm …

Briefly explain stream class and pointer Stream class: The C++ I/O system contains a hierarchy of classes that are used to define various streams to deal with both disk file …

Difference between concrete class and abstract class Concrete class Abstract class It is used to create object. It cannot be used to create object.

Define Abstract class Abstract class is a class which has at least one pure virtual function in it. What are the rules of using constructor in inheritance? To call parameterized …

Pure virtual function is a virtual function that does not have body and that is required to be implemented by a desired class. We need to use pure virtual function …

Virtual function: Virtual function is a member function in base class which is overridden in derived class. When we need to solve of function call is done at run time …

Difference between early binding and late binding Early Binding Late Binding Early binding happens at compile time. Late binding happens at run time. Function definition and function calls are linked …