devxlogo

A base class destructor should be virtual

A base class destructor should be virtual

If a class may serve as a base class for others, its destructor should be virtual. This ensures RTTI support for objects of this class and objects derived from it, and more important, you ensure that the correct destructor is always called, even in the following case:

 class Base{ 	char *p;	Base() { p = new char [200]; }	~ Base () {delete [] p; }	//...	};class Derived : public Base {	char *q;	Derived() { q = new char[300]; }	~Derived() { delete [] q; }	//...};void destroy (Base & b)  { delete &b; }int main(){	Base *pb = new Derived(); //200 + 300 bytes have been allocated	//... meddle with pb	destroy (*pb); 	//Oops! Base

See also  Monetize TikTok For Your Business
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist