What is C++

Note

Some of the topics on this page may be confusing depending on your level of experience; however, they will all be explained in this course.

C++ is a versatile, high-performance programming language designed for systems programming. It was developed by Bjarne Stroustrup in 1979 as an extension of the C language, with the goal of providing efficient and flexible support for object-oriented programming, low-level memory manipulation, and generic programming.

Being a statically-typed language, C++ enforces type checking at compile-time rather than run-time. This means that the programmer must explicitly define the data types of variables before using them in the program. The benefit of this approach is that it allows for better performance and helps catch errors early in the development process.

C++ offers many features that make it suitable for a wide range of applications:

  • Object-Oriented Programming (OOP): This paradigm allows you to model real-world entities as objects with properties (attributes) and behavior (methods). OOP promotes code reusability and maintainability through inheritance, encapsulation, and polymorphism.

  • Generic Programming: C++ provides powerful template support that enables you to write reusable algorithms and data structures without sacrificing performance. Templates allow you to create functions or classes that work with different data types without having to rewrite the same code for each specific type.

  • Low-level Memory Manipulation: As a systems language, C++ grants direct access to computer memory through pointers. This feature makes it possible to write highly optimized code for memory-intensive tasks or interfacing with hardware devices.

  • Standard Template Library (STL): The STL is a collection of template classes and functions provided by the C++ Standard Library. It includes containers (like vectors, lists, maps), algorithms (sort, find), iterators, and other utilities that simplify common programming tasks.

Despite its numerous advantages, there are some complexities associated with learning and mastering C++. For instance:

  1. Syntax: The syntax of C++ can be quite daunting for beginners, especially when dealing with pointers, references, and templates.

  2. Memory management: C++ requires manual memory management, which means that the programmer is responsible for allocating and deallocating memory as needed. This can lead to errors such as memory leaks or segmentation faults if not done correctly.

  3. Backward compatibility: C++ maintains a high degree (but not 100%) of backward compatibility with its predecessor, the C language. This results in a larger set of features and libraries available but also introduces some complexities when trying to understand older code or using legacy libraries. This provides the useful benefit of being able to use C code and C libraries with C++.