For your initial posting pick one of the popular computer programming languages (e.g. Java, C, C++, C#, Python, Ruby, etc.), determine the name of one of the function libraries that is provided by this programming language.

List and describe at least 3 of the library functions in this library.

Describe how this library is included in the source code for a program in this language so that to use a function only the function's name need to be mentioned.