C++ Programming Interview Questions

C++ is a middle-level object-oriented programming language developed by Bjarne Stroustrup starting in 1979 at Bell Labs. C++ runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.

Our C++ interview questions section includes all topics of C++ such as first example, control statements, objects and classes, inheritance, constructor, destructor, this, static, polymorphism, abstraction, abstract class, interface, namespace, encapsulation, arrays, strings, exception handling, File IO, etc.

C++ programming interview question

Q1- What is C++?

C++ is an object-oriented programming language. It was developed by Bjarne Stroustrup in the year 1979. It is also referred to as object-oriented programming language OOP'S. It is compiled, case-sensitive and statically typed.

  • C++ is termed as middle-level language means the combination of features of high level and low-level programming languages.
  • C++ is Multi Paradigm
  • In C++ you can use modifiers for your class members to make it inaccessible from outside.

Q2- What is a class?

Class can be defined as the blueprint that describes the states of supported types. But a class actually does not define the data, it just specifies the structure of data. To use them you need to create objects out of the class.

Q3- What is an object?

An instance of the class is called as object & object is a run-time entity.

  • The class does not occupy any memory space.
  • When an object is created using a new keyword, then space is allocated for the variable in a heap, and the starting address is stored in the stack memory.
  • When an object is created without a new keyword, then space is not allocated in the heap memory, and the object contains the null value in the stack.


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