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 Related Questions A virtual function allows derived classes to replace the implementation provided by the base class. The compiler makes sure the replacement is always called whenever the object in question is actually Latest Answer : A virtual function allows derived classes to replace the implementation provided by the base class. ... The free subroutine frees a block of memory previously allocated by the malloc subroutine. Undefined results occur if the Pointer parameter is not a valid pointer. If the Pointer parameter is a null value, Latest Answer : free() - releases the memory of the pointer passed as parameter, to the OS/application consumption. Using the pointer after free() will result in undefinded resultsrealloc() - used to resize the memory held by the pointer to the number of bytes specificed. ... Runtime type identification (RTTI) lets you find the dynamic type of an object when you have only a pointer or a reference to the base type. RTTI is the official way in standard C++ to discover the type Latest Answer : We can only assign a derived object to a base object pointer and a base class member to a derived class member pointer. ... Virtual destructors: If an object (with a non-virtual destructor) is destroyed explicitly by applying the delete operator to a base-class pointer to the object, the base-class destructor function (matching Latest Answer : Virtual constructor is not build-in C++ feature but it doesn't mean its not used by devs in code and in conversations. There are many other things that doesn't exist in particular language yet, people find ways around to solve it (SingleTon, Virtual Constructor, ... Explain "passing by value", "passing by pointer" and "passing by reference" Tags : Pointer Latest Answer : Thank you everybody for giving the right answer to the question. However the use of the term "pointer" in the question still leaves a lingering doubt in my mind as to whether the questioner really typoed a reference as a pointer? or did ... Tags : Pointer Latest Answer : pointer holds the address of a variable.reference holds the address of duplicate of that variable. ... Read Answers (5) | Asked by : Nayan Tags : Pointer Latest Answer : Smart pointers are objects which store pointers to dynamically allocated (heap) objects. They behave much like built-in C++ pointers except that they automatically delete the object pointed to at the appropriate time. Smart pointers are particularly useful ... Read Answers (2) | Asked by : satish Tags : Pointer Latest Answer : Fake pointer is used to create a illusion or virtual functionality of pointer which is used to mutate the objects where single objects have multiple functionality at same time.Please confirm , i just guess ... Tags : Pointer Latest Answer : In 16 bit development environment like DOS or WIN 3.0 memory management is done in terms of segment:offset addressing style. so in this environment we have segment registers like CS,DS.SS,ES if we declare a near pointer we will be able to access the pointer ... Read Answers (1) | Asked by : satyagmk Tags : Pointer
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