The function main( ) invokes other functions within it.It is the first function to be called when the program starts execution.

- It is the starting function

- It returns an int value to the environment that called the program

- Recursive call is allowed for main( ) also.

- It is a user-defined function

- Program execution ends when the closing brace of the function main( ) is reached.

- It has two arguments 1)argument count and 2) argument vector (represents strings passed).

- Any user-defined name can also be used as parameters for main( ) instead of argc and argv