C++ Interview Questions

C++ is an extension of the C programming language with support for object-oriented features.

It includes classes, inheritance, polymorphism, templates, exception handling, and the Standard Template Library (STL).

C++ is widely used for game development, system/software development, real-time simulations, and embedded systems.

It gives developers fine-grained control over memory and hardware, while supporting modern programming constructs for larger-scale software design.

C++ is compiled into machine code, offering high performance and direct hardware interaction.

A class is a blueprint for creating objects and defines their properties and behaviors.

It encapsulates data (attributes) and functions (methods) to model real-world entities and promote code reuse.

Objects are instances of classes created using the new keyword or stack allocation.

Classes can inherit from other classes, overload operators, and define access specifiers like public, protected, and private.

Well-designed classes are central to object-oriented programming in C++.

Operator overloading allows existing operators to be redefined to work with user-defined types.

For example, '+' can be overloaded to concatenate strings or add complex numbers.

Not all operators can be overloaded (e.g., ., ::, ?:).

Overloading improves code expressiveness and enables intuitive syntax for custom types.

Used wisely, it enhances readability and usability of domain-specific types and containers.