What is a function?       Why do you need a function?

Scope of the function.   Examples of functions.     

Scope of a Function



When programs are complex or large, a few rules should be used to help keep the them readable and maintainable:

• The main function should be no more than one page in length.
• The main function should read like an executive summary of the solution to the problem.
• Each separate function should be a self contained and independent logical entity.
  
  

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