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C and C++

Posted on 1997-11-12
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Last Modified: 2010-04-10
1. Basic instruction for C and C++ languages.
2. What's the same between C and C++, including examples between this two.
3. What is pseudocode?
4. What's the different C and C++ algorithm?
thanx..
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Question by:norisha
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galkin earned 100 total points
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First c++ comprises c but have more features c doesn't have.
Base unit of c++ is class, The nature of class as follows. First 32 bits are pointer to virtual table(vtable).Each element of the vtable is pointer to virtual function. When one class derived from another derived class is built so that first goes pointer to vtable then base class data and then derived class data. Derived class uses the same pointer to vtable but can replace some elements(pointers to virtual functions) so overwrite these functions. This is main advance of c++ - inheritance and polimorphism which leads to ability to write reusable code.
c++ is object oriented language but c is procedural oriented language. c++ class which describes the object defines its data as public which are accesible by outside world and represent object to outside world, protected which are restricted data and private used by object itself only. c structure has public members only. In c you create eachprocedure for each action in c++ you create each class for each object inhereting such class from similar objects thus reusing features which are common to these objects.  
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