Naming Elements: Declaration
		• A declaration tells the computer what an identifier represents. (object, function, or type) • In C++, you must declare every identifier before it is used. • A memory location which can change is known by a variable name. • VariableDeclaration    DataType Identifer , Identifier …; • A memory location(s) whose value never changes is known by a constant name • ConstantDeclaration    const DataType Identifier = LiteralValue;