#include <iostream>
using namespace std;

class Parent{
    private:
    int a = 30;
    
    public:
    void show(){
        cout<<"In parent"<<endl;
    }
};
class Child : public Parent{
    public:
    void display(){
        cout<<a<<endl;
    }
};
int main() {
    Child obj;
    obj.display();
    return 0;
}