Introduction to C language

C is a general-purpose programming language that was developed in the early 1970s by Dennis Ritchie at Bell Labs. It is a high-level, procedural language known for its simplicity, efficiency, and versatility. C was initially designed as a system programming language for developing the Unix operating system, but it quickly gained popularity and became widely used in various domains.

C is often referred to as a "middle-level" language because it combines elements of high-level languages with low-level features. It provides direct access to computer hardware through pointers, allowing programmers to manipulate memory and perform low-level operations. This feature makes C suitable for system programming, embedded systems, and other applications that require efficient resource management.


History and features of C

The C programming language was developed by Dennis Ritchie at Bell Labs in the early 1970s. It was initially designed as a system programming language to write the Unix operating system.

C gained popularity due to its simplicity, efficiency, and portability. It provided low-level access to computer hardware while still being expressive and easy to understand.

Key features of the C programming language include:

Due to its widespread adoption and influence, many other programming languages, such as C++, Java, and C#, have borrowed syntax and concepts from C. Learning C provides a solid foundation for understanding these languages and delving into more advanced programming concepts.

Installing a C compiler

Follow the Instructions to setup the MinGw 64 for windows 10/11.

Writing and running a "Hello, World!" program

A "Hello, World!" program is a simple program that displays the message "Hello, World!" on the console.

To write the program, you need to include the necessary header files. In this case, you need the stdio.h header file, which contains the function for console output.

The program starts with the main() function, which serves as the entry point for the program.

Inside the main() function, you use the printf() function from the stdio.h library to display the "Hello, World!" message.

After writing the program, you save it with a .c extension, such as "hello.c".

To compile the program, open the command prompt or terminal, navigate to the directory where the program is saved, and use the C compiler. For example, with GCC, you can run "gcc hello.c -o hello" to compile the program into an executable named "hello".

Finally, you can run the program by typing "./hello" (on Linux) or "hello.exe" (on Windows) in the command prompt or terminal. This executes the program and displays the "Hello, World!" message.