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 OOPS  |  Question 189 of 255    Print  
Does c++ support multilevel and multiple inheritance?

  
Total Answers and Comments: 2 Last Update: January 20, 2006   
  
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December 09, 2005 11:03:20   #1  
sahu Member Since: December 2005   Contribution: 324    
RE: Does c++ support multilevel and multiple inherita...

ans:

yes, we can.


 
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January 20, 2006 07:02:27   #2  
samiksc Member Since: October 2005   Contribution: 233    
RE: Does c++ support multilevel and multiple inherita...

Yes,

In C++ we can derive a class C from B which is derived from A -- multilevel inheritance.

In C++ we can derive a class D from two base classes A and B -- multiple inheritance. This may cause a problem in case A and B are derived from a single base class say P. When a D's method refers to a public/protected data member of P (the uppermost parent) there are two paths available -- A::var or B::var -- here the compiler gives an error. To avoid this problem A and B need to be 'virtually' derived from P. If they are virtually derived then only one copy of P's data members exist for both A and B objects.


 
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