structure of c

The “C” program contains the 3parts

A C Program contains :

Part 1

Documentation Section (Comments)

Link Section

Definition Section (Macros)

Global Declaration Section (Global Variables)

Part 2

main() section

Part 3

Sub Program Section (Functions)

                                                                                   Part-1

Documentation section .

It contains the comment lines.

It is optional

Link Section.

It contains the header files.

Ex

#include<stdio.h>

#include<conio.h>

Definition Section.

The definition section contains the macros. It is optional

Global Section

If the variable is declared before the function then it is known as the variable

Ex:

int a;

void main()

{

 statements;

}

Part-2

main()

”C” program starts from the main() section, main() contains the blog of the statements.

main is the special user defined (), it is not predefined in any header files

Part-3

Sub program section.

 It is a user defined function