lib file

A Lib (library) is a collection of object code that can be linked into another program.

There normally is 2 steps to creating a C program.

First you compile it to an object module and then you link it to the libraries that you need for the system or other calls you used in your program.

It all depends on what compiler your using to link the module.

you can always use the manual command of:

link programexecutable object+object+object