Write few Lines about main() in C?

Main  is a user defined function. It is the staring address of every program. C permits different forms of main() statements. following forms are allowed. Main (  )   {- - - - - - -} Int main (  ) Void main  (   )  Main (void) Void main (void) Int main (void)

® The empty pair of parentheses indicates that the function has no arguments.

® The keyword void means that the function does not return any information to the    operating system.

® Int means that the function returns an integer value to the operating system.     When int is specified, the last statement in the program must be return.