HISTORY OF C
----------------------
            - BCPL (Basic Combined Programming Language), which
was developed by MartinRichards at
Cambridge University.
 
            - B language, which is written by Ken Thompson
at AT&T Bell Laboratories. But the B Language is useful for only some
specific problems.
   
            - “Dennis Ritchie” developed C language in the 1970’s at
Bell laboratories.

            - C (combined) Language has the features of both BCPL & B Language.
It is a middle level language. It is excellent, efficient and general-purpose
language for most of the applications, such as scientific business and system
software application.
Structure of C
          -C is the structured language as well as case sensitive language.
C program structure are specified below:

Comments
Preprocessor directives                                For More Information
Global variables
main()
{
            local variables
            statement
            ---------------------
            ---------------------
}

func1()             //other function
{
            local variables
            statement
            ---------------------
            ---------------------
}
           
func2()
{
            local variables
            statement
            ---------------------
            ---------------------
}

Comment:
            Comment means instructions (lines) are not executed by the compiler.
In C language comment statement are specified below:

Multiple line comment      /*comment*/

Ex:
Program for addition

The #include directive
            In C, #include forms a preprocessor directive that tells the C
preprocessor to look for a file and place the contents of the file in the
location which the #includes directive indicates.
            #include<stdio.h> allows the program to interact with the screen,
keyboard and file system of your computer. You will find it at the beginning
of almost every C program.