Original Sticker Address: http://pierrespring.com/2010/05/11/function-scope-and-lexical-scoping/
Personally feel good writing, easy to carry, if there are errors, please correct me.
Wikipedia defines Scope as follows:
Tipically, scope is used to define the extent of information hiding--that are, the visibility or accessibility of
Variables from diefferent parts of the program.
Scopes are used to define the depth of information hiding-the accessibility of variables in a section elsewhere in the program.
Function Scope means that any variable which are defined within a function is visible within that entire function .
This was quite different form Block scope, in which a variable scopes is limited by the block a variable are declared in.
Function Scope means that any variable defined inside a function is visible to the entire function .