HighRadius Developer Interview Questions and Answers

Virtual functions allow polymorphism in C++. Vtable is a lookup table for virtual functions and vpointer points to it.

• Virtual functions are used to achieve runtime polymorphism

• Vtable is a table of function pointers for virtual functions

• Vpointer points to the vtable of the object

• When a virtual function is called, the vpointer is used to lookup the correct function in the vtable

• Vtable is created at compile time and is un

Pure virtual functions are functions with no implementation in base class. Pure virtual destructor is used to ensure proper destruction of derived objects.

• Pure virtual functions are declared with the syntax virtual void functionName() = 0;

• Classes with pure virtual functions are called abstract classes and cannot be instantiated.

• Derived classes must implement pure virtual functions to be instantiated.

• Pure virtual destru...read more

Yes, we can handle exceptions in constructor and destructor.

• In constructor, we can use try-catch block to handle exceptions.

• In destructor, we should avoid throwing exceptions as it can lead to undefined behavior.

• If an exception is thrown in constructor, the object is not fully constructed and should be destroyed.

• If an exception is thrown in destructor, it should be caught and handled properly to avoid program terminati