Scopes

• C++ variables, functions, and classes are placed in a scope.

• Scope determines visibility and lifetime of variables.

• C++ comes with:

  1. global scope outside functions (global namespace)

  2. local scope inside functions

• In C++, code blocks also have their own scope.

• In C++, classes provide a scope nested inside the global scope.

• Class scopes can be referred to by name using the :: operator.

• Member functions themselves are in the class scope.

• Member function bodies have the local scope.