The background of the C++ programming language is fascinating to explore. In this section, we will delve into a concise overview of the history of C++ language.
C++ remains a leading programming language due to its outstanding attributes such as effectiveness, strong performance, and versatile functionality. Numerous software development teams opt for C++ to construct system software, create games, design embedded controllers, and develop high-throughput applications. The evolution of C++ has progressed hand in hand with significant advancements in contemporary computing and software engineering.
Origins of C++:
The C++ programming language was created in 1980 by Bjarne Stroustrup at Bell Laboratories of AT&T (American Telephone & Telegraph) in the United States. The developers designed C specifically to cater to the Unix systems programming needs by balancing low-level functionality with high-level programming constructs.
During the late 1970s, Bjarne Stroustrup added features from Simula 67 to C while working as a Danish computer scientist at Bell Labs. The main objective behind his work involved synthesizing C's efficient nature with OOP's abstract modular systems.
- Bjarne Stroustrup is known as the founder of the C++ language.
- It was develop for adding a feature of OOP (Object Oriented Programming) in C without significantly changing the C component.
- C++ programming is "relative" (called a superset) of C, which means any valid C program is also a valid C++ program.
Let's explore the programming languages that were created prior to the development of the C++ language.
| Language | Year | Developed By |
|---|---|---|
| Algol | 1960 | International Group |
BCPL |
1967 | Martin Richard |
B |
1970 | Ken Thompson |
| Traditional C | 1972 | Dennis Ritchie |
| K & R C | 1978 | Kernighan & Dennis Ritchie |
C++ |
1980 | Bjarne Stroustrup |
The Birth of "C with Classes":
Stroustrup embarked on his C++ language creation voyage back in 1979. His efforts resulted in the birth of "C with Classes," a version that incorporated object-oriented concepts like classes, inheritance, and encapsulation into the existing C language framework. The primary goal of introducing C with Classes was to elevate the capability of software systems for intricate tasks while maintaining the performance standards akin to those of C.
The core elements introduced in C with Classes included:
- Classes and Objects: It enables modular and reusable code.
- Constructors and Destructors: Automating initialization and cleanup of objects.
- Derived Classes and Inheritance: The derived class concept alongside inheritance offers programmers tools to establish hierarchical code structures.
- Stronger Type Checking: Better enforcement of data types helps reduce errors made by programmers.
The Emergence of C++ (1983):
The programmer renamed "C with Classes" to C++ in 1983 due to the substantial enhancements it offered over the base C language. C programmers made use of the "++" symbol for incrementation to symbolize the evolution of the language towards C++.
The new features added to C++ after retaining C compatibility included:
- Function Overloading: Function Overloading enables C++ to define multiple functions under the same name with distinct parameters.
- Operator Overloading: It enables custom definitions of operators for user-defined types.
- References: The Reference system serves as a flexible substitute for pointers in programming contexts.
- Inline Functions: Inline Functions enhance system performance by eliminating the performance impacts from entering and exiting functions.
The First Official C++ Release (1985):
The initial C++ compiler, known as Cfront, was introduced in 1985 coinciding with the publication of Stroustrup's influential work "The C++ Programming Language". This publication quickly became a pivotal resource for developers and educators alike. The adoption of C++ by software developers surged as it gained recognition as the primary choice for constructing intricate applications.
Standardization and Evolution of C++:
1. C++98 (1998):
In 1998, C++ was formally established as an ISO/IEC standard known as C++98 while it proceeded along its development trajectory. The incorporation of the Standard Template Library (STL) was a key aspect of the C++98 standard, encompassing reusable and effective data structures and algorithms.
Key features of C++98:
Several key features of C++ 98 are as follows:
- Templates: It allows generic programming.
- The STL: The Standard Template Library (STL) included vectors as well as maps and iterators to its standardized set of components.
- Exception Handling: It improves robustness in error handling.
2. C++03 (2003):
The C++03 iteration acted as a minor enhancement to C++98, addressing inconsistencies and clarifying ambiguous aspects. It brought in enhanced compiler functionality along with better portability attributes.
3. C++11 (2011) - The Modern C++ Era
The year 2011 represented a significant leap forward in C++ with the introduction of modern programming features. The primary objective of this enhancement was to enhance system performance, usability, and developer productivity.
Key features of C++11:
- Auto Keyword: It enables type inference.
- Lambda Expressions: It supports functional programming.
- Smart Pointers: It improves memory management.
- Move Semantics: The Move Semantics feature delivers higher performance levels through its elimination of excessive copy operations.
- Multiple Thread Support: Standard tools for thread management became available through Multiple Thread Support.
4. C++14 (2014) and C++17 (2017)
C++14 and C++17 enhanced existing C++11 features and introduced additional language functionalities to the standard.
The C++14 iteration introduced two upgrades that enhanced lambda capture capabilities and introduced improved constexpr functionality.
C++17 introduced three primary elements which include structured bindings, if constexpr statements, and enhanced filesystem support.
5. C++20 (2020) - A Game Changer:
C++20 introduced substantial progress which established itself as one of the largest upgrades ever seen in C++ history. Notable features include:
- Concepts: It improves template programming occurs through constraint-based approaches.
- Coroutines: It simplifies asynchronous programming.
- Ranges Library: The Ranges Library extends the Standard Template Library through range-based algorithms.
- Modules: It reduces the compile-time dependencies.
The Future of C++:
Enhancements are currently in progress for C++23 and future standards to improve the programming language. C++ continues to prioritize both performance and safety features, as well as modern design principles, making it a top choice for development projects.
Frequently Asked Questions:
1. Who created C++ and why was it developed?
Bjarne Stroustrup created C++ while working at Bell Labs in the late 1970s. The primary objectives behind developing C++ were to integrate object-oriented principles from Simula 67 into C, while maintaining C's efficiency to support large-scale software endeavors.
2. When was C++ officially released, and what were its key features?
C++ was formally introduced in 1985 when Stroustrup published The C++ Programming Language, coinciding with his company's launch of Cfront as the first C++ compiler. This language incorporated various significant features including classes and inheritance, as well as methods for function and operator overloading, references, and inline functions.
3. What was the significance of C++98 in the language's evolution?
The development of C++98 resulted in the implementation of the Standard Template Library (STL) in 1998. This update empowered programmers to leverage reusable data structures and optimized algorithms. C++ achieved enhanced uniformity across various platforms thanks to the codified functionalities such as templates and exception handling introduced in C++98.
4. How did C++11 change the language?
The introduction of the C++11 version brought about a notable enhancement to the language, introducing features such as the auto keyword, lambda expressions, smart pointers, as well as incorporating move semantics and multithreading capabilities. These additions to C++ not only improved performance and usability standards, but also bolstered memory management capabilities.
5. Which features stand out as the major contributions in C++20?
C++20 introduced four crucial elements: concepts, coroutines, ranges, and modules. These additions have elevated template programming and asynchronous operations, leading to enhanced usability of the Standard Template Library (STL) and greater efficiency during compilation. This update represents a groundbreaking milestone in the history of C++.
