C - structs and unions, C++ classes and polymorphism

C's structs allow you to define a variable type in which you can hold a variety of elements by name ... and that's very similar to how you define all the variables within a C++ class. In a C++ class, though, you also define your methods which take that language forward into the Object Oriented world.

C's unions let you define a block of memory which has two (or more) names associated with it so that - when combined with structs - you can produce a whole family of defined variable types based on a common core, but then varying in parts where appropriate. In OO terms, that's starting to head towards C++'s inheritance and polymorphism ...
(written 2008-03-13 18:28:44)

Associated topics are indexed under

C209 - C and C based languages - Structures and Unions
  [2573] C Structs - what, how and why - (2010-01-13)
  [1669] What are Unions (C programming) - (2008-06-08)
  [1584] Using Structs and Unions together effectively in C - (2008-03-21)
  [1478] Some new C programming examples - files, structs, unions etc - (2007-12-19)

C233 - C and C based languages - OO in C++ - beyond the basics
  [2577] Complete teaching example - C++, inheritance, polymorphism - (2010-01-15)
  [1819] Calling base class constructors - (2008-10-03)
  [1674] What a lot of files! (C++ / Polymorphism demo) - (2008-06-12)
  [1217] What are factory and singleton classes? - (2007-06-04)
  [925] C++ - just beyond the basics. More you can do - (2006-11-14)
  [831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13)
  [801] Simple polymorphism example - C++ - (2006-07-14)
  [798] References and Pointers in C++ - (2006-07-10)

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