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what is the main difference between c and c++?
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Answer Posted / p govind rao
1) C is a structural Language, but C++ is a object oriented
language.
2)C employs top down approach, but c++ employees bottom up
approach.
3) c doesn't support operator overloading but c++ support
operator overloading.
4) In C memory allocation is done with malloc statement
whereas in C++ it is done through new keyword.
5) Also memory is deal located in C using free statement
while in C++ deal location takes place through delete.
6) c is does not provide default argument but c++ is
provide default argument.
7) c is cant support the inheritance and polymorphism etc
but c++ support the inheritance and polymorphism etc.
8) c is low level language while c++ is sn high level
language.
9)C can not support all the feature of the C++. while c++
support all the features of C.
10. C variables are DECLARED in declaration section.C++
variables are DECLARED any where in the program.
11) C does NOT have NAMESPACE for avoid name collisions.
c++ has NAMESPACE feature.
| Is This Answer Correct ? | 15 Yes | 1 No |
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Question In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Question Submitted By :: Sunil Kumar I also faced this Question!! Rank Answer Posted By Re: In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Answer # 1 use copy constructors 0 Shanthila There is something to be taken care in destructor, in copy constructor, suppose the memory is assigned to the embedded member object pointer with the parameter passed value, but if some other objects of different class also are pointing to this memory, then if some one deletes the object then this class member pointer object will become dangling, or if the object is not deleted properly then there will be memory leak. Please suggest the design change required to handle or avoid this situation
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