"Modular" Programming

• grouping of proceedures (functions) into "module"
  
  

  typically combine by similar functionality.

  
  
  

• advantages:
  • more code reusibility (within and amongst programs)
  • Each module can have its own data.
  • This allows each module to manage an internal state which is modified by calls to procedures of this module.
    
    
    
    
• disadvantages:
  • There is only one state per module
  • Each module exists at most once in the whole program
  • Data and Operations always decoupled.... modules about grouping of operations.