Introduction to C++
C++ is a general-purpose programming language created by Bjarne Stroustrup at Bell Labs in the early 1980s as an extension of C. Often described as "C with Classes", C++ adds object-oriented programming (OOP), generic programming through templates, the Standard Template Library (STL), and exception handling to C's powerful low-level capabilities. Today C++ remains one of the most widely used programming languages in the world, particularly in systems programming, game development, embedded systems, high-frequency trading, and any domain where performance is critical.
Key Features of C++
- Object-Oriented Programming (OOP): C++ supports classes, objects, inheritance, polymorphism, and encapsulation. These allow complex systems to be modelled as interacting objects with well-defined interfaces.
- Templates and Generic Programming: Write type-independent code — a single
sort()function that works on any comparable type — without sacrificing performance. - Standard Template Library (STL): A rich collection of containers (vector, map, list), algorithms (sort, find, transform), and iterators that dramatically reduce boilerplate code.
- RAII (Resource Acquisition Is Initialisation): Tie resource management (memory, file handles, locks) to object lifetime, preventing leaks automatically through constructors and destructors.
- Zero-overhead abstraction: C++ is designed so that abstractions you don't use cost nothing at runtime. When you do use them, they're as efficient as hand-written C.
C++ in Embedded Systems
C++ is increasingly used in embedded development, particularly on higher-end microcontrollers and embedded Linux platforms. The automotive industry uses C++ extensively for AUTOSAR-compliant software components. The key consideration in embedded C++ is avoiding runtime overhead features — dynamic memory allocation (new/delete) and exceptions are typically disabled on resource-constrained targets, while classes, templates, and inline functions are fully embraced for zero-cost abstraction.
C++ vs C for Embedded Development
C remains the dominant language for Linux kernel development (drivers are written in C, not C++). However, for user-space embedded applications, middleware, and firmware on powerful MCUs, C++ offers significant advantages in code organisation, reusability, and expressiveness. The choice depends on the target: bare-metal microcontroller firmware typically stays in C; complex embedded applications on Linux increasingly use C++ or even Rust.
Why Learn C++ at Embisyslabs
Embisyslabs teaches C++ as part of our C, OOPs & Python Programming course, covering the language from fundamentals through advanced OOP concepts with practical embedded-context examples. Students gain the ability to write well-structured, maintainable code for both firmware and application-layer embedded software.
