What are C and C++ and what is the difference between them?

C is a programming language developed in the early 1970s by Dennis Ritchie at Bell Laboratories, originally designed to rewrite the Unix operating system in a language more portable and readable than assembly. Despite its age, C is still one of the most widely used programming languages in the world today, especially in contexts where performance and direct hardware control are absolute priorities. Its essential syntax, manual memory management and closeness to the actual functioning of the processor make it the preferred tool for developing operating systems, firmware, drivers, microcontrollers and embedded applications. Learning C means truly understanding how a computer works at a low level, which is why it is still taught as a first language in many university computer science courses.

C++ was created in the early 1980s as an extension of C, developed by Bjarne Stroustrup, also at Bell Labs, with the goal of adding support for object-oriented programming to the original language. The name itself, using the ++ increment operator typical of C syntax, suggests the idea of a step forward from its predecessor. C++ maintains compatibility with C, meaning that almost all valid C code is also valid C++ code, but it adds fundamental concepts such as classes, objects, inheritance, polymorphism and templates, which allow complex programs to be structured in a much more organized and reusable way. This makes it suitable for large-scale projects where maintainability and code modularity are critical aspects.

The main difference between the two languages is therefore not only technical but also philosophical. C is a procedural, minimal and surgical language that offers maximum control with the least possible abstraction: everything that happens in the program is explicit and predictable, but the responsibility for managing it correctly falls entirely on the programmer. C++ adds layers of abstraction that make the code more expressive and organized, but also introduce greater complexity and a steeper learning curve. In practice, C is preferred for operating systems, kernels and embedded programming where every byte matters, while C++ is the dominant choice for video game development, graphics engines, high-performance software and complex desktop applications. Both remain highly relevant in today’s landscape, and knowledge of at least one of them is considered a solid foundation for any programmer who truly wants to understand how software works beneath the surface.