how to make inheritance program in c++ very easy

 Source code 

/*
Make by:- skeleton programmer
like & subscribe my channel
*/
#include<iostream>
//#include<conio.h>
using namespace std;
//example of inheritence.
//source code in discription.
class base {
private:
    int a;
public:
    int b,c;
    int setDataA() {
        a = 6;
    }
    int setDataB() {
        b = 483;
    }
    void display() {
        c = a + b;
        cout<<"The value of a + b \n"<<a<<" + "<<b<<" = "<<c<<endl;
    }

};
class derived:public base {
public:
    string name  = "Like & subscribe";
    void display1() {
        cout<<name<<endl;
    }
};
int main()
{
    derived a;
    a.display1();
    a.setDataA();
    a.setDataB();
    a.display();

}