Head First Design Patterns used in the original book is written in JAVA code, the network also has C#, but did not see with C achievable. This is what I use C realization of the factory pattern code

FactoryPattern
..............\FactoryPattern
..............\..............\ChicagoPizzaStore.cpp
..............\..............\ChicagoPizzaStore.h
..............\..............\ChicagoStyleCheesePizza.cpp
..............\..............\ChicagoStyleCheesePizza.h
..............\..............\ChicagoStyleClamPizza.cpp
..............\..............\ChicagoStyleClamPizza.h
..............\..............\Debug
..............\..............\FactoryPattern.cpp
..............\..............\FactoryPattern.vcproj
..............\..............\NYPizzaStore.cpp
..............\..............\NYPizzaStore.h
..............\..............\NYStyleCheesePizza.cpp
..............\..............\NYStyleCheesePizza.h
..............\..............\Pizza.cpp
..............\..............\Pizza.h
..............\..............\PizzaIngredientFactory.cpp
..............\..............\PizzaIngredientFactory.h
..............\..............\PizzaStore.cpp
..............\..............\PizzaStore.h
..............\..............\ReadMe.txt
..............\..............\stdafx.cpp
..............\..............\stdafx.h
..............\FactoryPattern.ncb
..............\FactoryPattern.sln

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