Illustrated C# 2012

C H A P T E R  3

Types, Storage, and Variables

• A C# Program Is a Set of Type Declarations
• A Type Is a Template
• Instantiating a Type
• Data Members and Function Members
• Predefined Types
• User-Defined Types
• The Stack and the Heap
• Value Types and Reference Types
• Variables
• Static Typing and the dynamic Keyword
• Nullable Types

A C# Program Is a Set of Type Declarations

If you were to broadly characterize the source code of C and C++ programs, you might say that a C program is a set of functions and data types and that a C++ program is a set of functions and classes. A C# program, however, is a set of type declarations.

• The source code of a C# program or DLL is a set of one or more type declarations.
• For an executable, one of the types declared ...