#include <iostream>
using namespace std;

class A{
    public:
    void show(){
        cout<<"In A show"<<endl;;
    }
    class B{
        void display(){
            cout<<"In  display"<<endl;
        }
    };
};

int main() {
    A obj;
    obj.show();
    obj.B obj2;
    
    return 0;
}