As the name suggests, the function acts as a friend to a class. As a friend of a class, it can access its private and protected members. A friend function is not a member of the class. But it must be
Latest Answer : Friend function is used in OOP languages which allows a private or protected function to be accessed by a member outside a class.
Any function outside a Class can be given access to work with members inside a class by simply writing a keyword
friend ...
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 : It is a functions whose behaviour can be overriden with an inherited class by a function of same signature. It is an important part of OOPS and Polymorphism. ...
"Poly" means "many" and "morph" means "form". Polymorphism is the ability of an object (or reference) to assume (be replaced by) or become many different forms
Latest Answer : C++ enables polymorphism - The ability of obejcts of different classes related by inheritance respond differntly to the same function call. ...
Function overloading: C++ enables several functions of the same name to be defined, as long as these functions have different sets of parameters (at least as far as their types are concerned). This
Latest Answer : Here are some examples1) Function overloadingclass FuncOver {public: // Constructors can also be overloaded. FuncOver(); // Overloaded constructor. ...
The idea behind inline functions is to insert the code of a called function at the point where the function is called. If done carefully, this can improve the application's performance in exchange
Latest Answer : inline function is a function which extends the code when it is invoked. Otherwise is skip the code. ...
Templates allow to create generic functions that admit any data type as parameters and return value without having to overload the function with all the possible data types. Until certain point they fulfill
Latest Answer : A template parameter is a special kind of parameter that can be used to pass a type as argument: just like regular function parameters can be used to pass values to a function, template parameters allow to pass also types to a function. These function ...
Namespaces allow us to group a set of global classes, objects and/or functions under a name. To say it somehow, they serve to split the global scope in sub-scopes known as namespaces. The form to
Latest Answer : Namespace is simply a name given to a global space, to form a sub-space in global space. ...
A pure virtual member function is a member function that the base class forces derived classes to provide. Normally these member functions have no implementation. Pure virtual functions are equated to
Latest Answer : Pure virtual function is the virtual functions which member functions does not have any definitions(implementation),just it equates(=) to 0. With Pure virtual function, the base class becomes "Abstract class". The abstract class does not instantiate/ ...
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, ...
We can overload assignment operator as a normal function.But we can not overload assignment operator as friend function why?
