C Language Tutorial

C language is a general-purpose, procedure-oriented computer programming language. In 1972, in order to port and develop the UNIX operating system, Dennis Ritchie designed and developed the C language at Bell Telephone Laboratories.

C language is a widely used computer language. It is as popular as the Java programming language, and both are widely used among modern software programmers.

The current latest C language standard is C18, and the C language standards before it include C17, C11...C99, etc.

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Who should read this tutorial?

This tutorial is specially designed for software programmers who need to learn C language from scratch. This tutorial will give you sufficient understanding of C language, thereby enhancing your own professional knowledge level.

Before reading this tutorial, the knowledge you need to understand:

Before starting to learn this tutorial, you need to have a basic understanding of computer programming terminology. A basic understanding of any programming language will help you understand C language programming concepts and help accelerate your learning progress.

Compile/Execute C Program

Example

#include <stdio.h> int main() { /*My First C Program*/ printf("Hello, World! \n"); return 0; }

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Example Analysis:

  • All C language programs need to includemain()Function. The code starts frommain()The function begins execution.
  • /* ... */Used for comments and explanations.
  • printf()Used for formatted output to the screen.printf()The function is in"stdio.h"Declared in the header file.
  • stdio.his a header file (standard input/output header file),#includeis a preprocessor command used to include header files. When the compiler encountersprintf()When calling a function, if it is not foundstdio.hin the header file, a compilation error will occur.
  • return 0;The statement is used to indicate exiting the program.
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