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.
C++ interview questions are presented according to the topics of C++ programming such as control statements, objects & classes, inheritance, constructor, destructor, this, static, polymorphism, abstraction, abstract class, interface, namespace, encapsulation, arrays, strings, exception handling, File IO, etc...
List of Top C++ Interview Questions
Q1 What is C++?
C++ is an object-oriented programming language. It was developed by Bjarne Stroustrup in the year 1979 as mentioned in the upper line. It is also referred to as object-oriented programming language OOP'S. It is compiled, case-sensitive, and statically typed.
- C++ is termed a 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?
The 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 an object and the 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.