C Programming Overview

*In 1967, Martin Richards developed a language called BCPL (Basic Combined Programming Languages)used for writing system software.

*B was developed by Ken Thompson used to create UNIX operating system.

*Dennis Ritchie at Bell Laboratories C was created with the combination of ALGOL, BCPL and B.

Importance Of C 

*Rich set of built-in functions and operators to write complex program. 

*C compiler combines assembly language and High Level Languages. 

*C are efficient and fast. 

*32 key words and strength lies in its built-in functions. 

*C is highly portable. 

*C is well suited for structured programming. 

Sample Program: Printing a Message 

main() 

{ 

                   /*…. Printing begind….*/ 

                   printf(“I see, I remember,”); 

} 

Out put: I see, I remember, 

Format of C Programming 

i. main() : Function name. It informs the system the name of the program is main and the execution begins at this line. 

ii. The opening brace “{” and the closing brace “}” contain the function body. Its contains a set of instructions to perform the given task. 

iii. C does not distinct between uppercase and lowercase letter. 

main()Function Name

{Start of Program

……………..Program Statement

……………… Each Statement must end with a semicolon (;)

}End of Program

The #define Directives