All data members and member functions of the class can be accessed with the help of objects. When a class is defined, no memory is allocated but when it is instantiated (i.e. an object is created), memory is allocated. … Difference between Class and Object. S. No.ClassObject5A class is a logical entity.An object is a physical entity.Difference between Class and Object – GeeksforGeeks www.geeksforgeeks.org › difference-between-class-and-object