Basic Structure of C Program

Basic Structure of C Program

The above image shows the structure of the C program.

Documentation section :

consist of set of comment lines giving the name of the program the author and detail regarding the program.

Link section:

provides instructions to the compiler to link functions from system library.

Definition Section:

Defines all symbolic constants.

Global declaration section :

declares variables that are globally visible ,inside all the functions.

Main program section :

all  C  program must contain one main function . the program start to execute from the main function only.

It contains two parts the declaration part and the executable part.

• In declaration part all the variables that are used in the executable part are declared.
• there is atleast one statement in executable part.
• these two parts appears between the opening and closing braces.
• All the statements in declaration and executable parts ends with semicolon. 

Subprogram section :

contains all the user defined functions that are called in main function.

Thank you....