Which feature of OOP reduces the use of nested classes?

a) Inheritance
b) Binding
c) Abstraction
d) Encapsulation

Answer: a

Video Lecture

#include<iostream>
 using namespace std;
 class A
 {
     private:
         class B
         {
             public:
                 void show()
                 {
                     cout<<"Nested class"<<endl;
                 }
         };
     B in;
 public:
     void show()
     {
         in.show();
     }
 };
 int main()
 {
     A out;
     out.show();
     return 0;   
 }