1 Separate Compilation
 1.1 Separate Compilation
2 Pre-processing
 2.1 #include
 2.2 Other Pre-processing Commands
3 Declarations and Definitions
 3.1 Decls&Defs: Variables
 3.2 Decls&Defs: Functions
 3.3 Decls&Defs: Data Types
4 Modules
 4.1 Coupling and Cohesion
5 Example of Modularization: the auction program
 5.1 Dividing Things Up