Features of C++ (original) (raw)

Last Updated : 26 Sep, 2025

C++ is an object-oriented programming language developed by Bjarne Stroustrup in 1979. It was developed as an enhancement of the C language to include object-oriented paradigm.

Object-Oriented Programming

It is an Object-Oriented language unlike C which is procedural oriented programming, hence efficiently models real-world problems and supports large-scale applications like OS, compilers, and simulations.

• Class
• Objects
• Encapsulation
• Polymorphism
• Inheritance
• Abstraction

Machine Independent

• A C++ executable is not platform-independent (compiled programs on Linux won’t run on Windows), however, they are machine-independent.
• For example: Linux/Windows/Mac OS which makes it Machine Independent but the executable file cannot run on different operating systems.

High Level Language

• It is a High-Level Language, unlike C and has English-like syntax, making it easier to read, write, and understand.
• It focuses on problem-solving while still allowing access to low-level features when needed.

Statically Typed

• The type of every variable is declared or determined at compile time, not at runtime.
• This provides early error detection and better performance compared to dynamically typed languages like Python and JavaScript.

Case Sensitive

• Case-sensitive language, which means it treats uppercase and lowercase letters as different. For example, **cin is used to take input from the input stream. But if the ****"Cin"** won't work. Other languages like HTML and MySQL are not case-sensitive languages.
• This ensures precision in naming but requires programmers to be careful with the use of letter cases.

Compiled

• The source code is directly compiled into machine specific code, unlike Python.
• Programs run faster and more efficiently compared to interpreted languages, while code is executed line by line.

Dynamic memory allocation

• This allows allocating memory for variables or arrays at runtime using the new operator.
• Dynamically allocated memory must be freed manually using the delete operator.

Existence of Libraries

• Provides a rich collection of built-in libraries, including STL with data structures and algorithms, which save time, promote reusability, and simplify complex programming.
• The Standard Template Library (STL) includes ready-to-use data structures (like vectors, stacks, queues, maps) and algorithms (like sorting, searching).

Multi-threading

• Multithreading is a form multitasking, where multitasking can be process-based (running multiple programs) or thread-based (running multiple parts of the same program).
• A multithreaded program contains two or more threads, each with its own execution path.

Fast and Simple

• Simple syntax and supports both high-level and low-level programming.
• It provides fast execution, making it ideal for performance-critical applications.

Templates

• Templates allow writing generic functions and classes that work with any data type, avoiding code duplication.
• They provide type safety at compile time, unlike macros in C, which only do text substitution.