Variables

Evolution

Attributes:

• Name: Identifier
  • Optional: Dynamic Variables
• Storage
  • Types of storage semantics
• Value
  • lvalue or Location or Address
    • Name Versus Location
  • rvalue or Value
• Data Type
• Scope
• Lifetime
  • Scope Versus Lifetime
• Permitted Operations:
  • Declaration: Binding of Name, Type, Storage
  • Initialization: Binding of Name, Type, Storage and Value
  • Assignment: Binding of Value
  • Referencing

Binding Times

• Types of Variables based on Storage Binding Times