출처 http://c-faq.com

Q: What are pointers really good for, anyway?

   

A: They're good for lots of things, such as:

  • dynamically-allocated arrays (see questions 6.14 and 6.16)
  • generic access to several similar variables
  • (simulated) by-reference function parameters (see question 4.8 and 20.1)
  • malloc'ed data structures of all kinds, especially trees and linked lists
  • walking over arrays (for example, while parsing strings)
  • efficient, by-reference ``copies'' of arrays and structures, especially as function parameters

(Note that this is hardly a comprehensive list!)

See also question 6.8.

   

    

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