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C Language Tutorial

C is a general-purpose, procedural computer programming language. Designed and developed by Dennis Ritchie at Bell Labs in 1972 for porting and developing the UNIX operating system.

C is a widely used computer language, as popular as Java, and is extensively used by modern software programmers.

The latest standard of C is C18, preceded by C17, C11, C99, and others.

C Online Tools

Who Should Read This Tutorial?

This tutorial is designed for software programmers who need to learn C from scratch. It will give you enough understanding of the C language to enhance your professional knowledge.

Prerequisites for Reading This Tutorial:

Before starting this tutorial, you should have a basic understanding of computer programming terms. A basic understanding of any programming language will help you understand the C programming concepts and accelerate your learning.

Compiling/Executing C Programs

Example

#include <stdio.h>

int main()
{
    /* My first C program */
    printf("Hello, World! \n");

    return 0;
}

Example Explanation:

Every C program requires the main() function. Execution starts from the main() function.
/* ... */ is used for comments.
printf() is used for formatted output to the screen. The printf() function is declared in the "stdio.h" header file.
stdio.h is a header file (standard input output header file), and #include is a preprocessor command to include the header file. If the compiler encounters the printf() function without the stdio.h header file, it will result in a compilation error.
The return 0; statement is used to exit the program.

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