Explain basic structure of c language
Documentation section : The documentation section consists of a set of comment lines giving
the name of the program, the author and other details, which the programmer would like to use
later.
1. Link section : The link section provides instructions to the compiler to link functions from
the system library.
2. Definition section : The definition section defines all symbolic constants.
3. Global declaration section : There are some variables that are used in more than one
function. Such variables are called global variables and are declared in the global declaration
section that is outside of all the functions. This section also declares all the user-defined
functions.
4. main () function section : Every C program must have one main function section. This
section contains two parts; declaration part and executable part.
