Libraries are the compiled code that is usually incorporated into a programer at a later time.

• Three types: Static Libraries, Shared Libraries, and Dynamically Loaded Libraries
• Static libraries are a collection of normal object files.
• They usually ends with “.a”.
• Collection is created with “ar” command.
• Shared libraries are loaded at program start-up and shared between programs.
• Dynamically loaded libraries can be loaded and used at any time while a program is running.
• DL libraries are not really in any kind of library format.
• Both static and shared libraries can be used as DL libraries.