Learn C Programming


What is C?

The C programming language is a procedural & general-purpose language that provides low-level access khổng lồ system memory. A program written in C must be run through a C compiler to convert it into an executable that a computer can run. Many versions ofUnix-based operating systems (OSes) are written in C and it has been standardized as part of the Portable Operating System Interface (POSIX).

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Today, the C programming language runs on many different hardware platforms và OSes such as Microsoft and Linux.

Pros & cons of C

The C language comes with a set of special characteristics, making it one of the most widely used languages of all time. The following are the main benefits of using C:

Portable. C is machine-independent and C programs can be executed on different machines. Mid-level programming language. It"s a mid-level language that supports the features of both a low-level & a high-level language. Rich library. It offers numerous built-in library functions that expedite the development process. Speed. It"s a compiler-based language, which makes the compilation và execution of code faster. Since only essential & required features are included in C, it saves processing power and improves speed. Pointers. C uses pointers, which improve performance by enabling direct interaction with the system memory. Recursion. C enables developers to backtrack by providing code reusability for every function. Extensible. A C program can be easily extended. If code is already written, new features và functionalities can be added to lớn it with minor alterations.

C also comes with a few shortfalls, even though it"s an ideal language for programming beginners due to lớn its simple syntax, algorithms và modular structure. The following are a few disadvantages of using C:

Namespace feature. C lacks namespace features, which means the same variable name can"t be reused in one scope. Without namespaces, it"s impossible lớn declare two variables with the same name. Run-time checking. C doesn"t display code errors after each line of code; instead, all the errors are presented by the compiler after the program has been written. This can make code checking a challenge, especially for larger programs. Constructor and destructor. Since C isn"t object oriented, it doesn"t offer constructor & destructor features. Constructing or destructing a variable in C must be done manually through a function or by other means. Garbage collection.

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C isn"t equipped with garbage collection. This important feature automatically reclaims memory from objects that are no longer required by the library or an app.

Where is C used?

C has a wide range of real-world applications that aren"t limited to the development of OSes and applications. C is also used in areas such as graphical user interface development and integrated development environments.

The following are some use cases for the C language:

OSes, such as Unix & all Unix applications; language compilers, including the C compiler; text editors; print spoolers; assemblers; network drivers; language interpreters; & utilities, such as network drivers, mouse drivers and keyboard drivers.
There are a variety of programming languages & frameworks, including C.

What"s the difference between C và C++?

While C and C++ sound familiar, the usage and features of both languages differ to lớn a certain extent. C++ is a superset & successor to the C language that uses an entirely different set of programming concepts. C is a procedural programming language, whereas C++ provides OOP support.

The following highlights the differences between the two languages:

C is a procedural language that provides no tư vấn for objects & classes. C++ is a combination of OOP và procedural programminglanguages. C has 32 keywords and C++ has 63 keywords. C doesn"t have access modifiers, whereas C++ does. C uses the header tệp tin for input và output operations and C++ uses the header file for input và output operations. C doesn"t tư vấn function và operator overloading, but C++ does. In C, the main() function calls are made through other functions used in the code, but C++ doesn"t provide that functionality.

History of C

The C programming language was developed at the former AT&T Bell Laboratories in the early 1970s by computer scientist Dennis Ritchie. The successor lớn the B language, C was initially developed for writing code for the Unix operating system, which at the time used assembly programs that communicated directly with the computer hardware. Assembly programs can be complex và lengthy, and programmers needed a language that promoted a user-friendly mix of instructions. C fulfilled these objectives & also helped overcome the challenges that programmers experienced with BASIC, B và Basic Combined Programming Language.

Due to lớn its popularity và flexible features, it was soon released for cross-platform usage và quickly became commercialized. C is still commonly used in website development projects và many popular languages, such as Java, PHP và JavaScript have directly or indirectly borrowed features and syntax from C.

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While C has transformed over the years, it"s still used commonly in lower-level programs, such as kernels.

C has rapidly evolved since its inception. Examine the history of C, how it has evolved và why it"s still relevant today.