#include<iostream>
using namespace std;
class base
{
int a;
public:
base(int x)
{
a=x;
}
void displayb()
{
cout<<"the value of a is:"<<a<<endl;
}
};
class drived:public base
{
int b;
public:
drived(int x,int y):base(x),b(y)//initilization list in constructor
{
cout<<"base constructor initilized:"<<endl;
}
void displayd()
{
cout<<"the value of b is:"<<b<<endl;
}
};
int main()
{
drived obj(10,20);
obj.displayb();
obj.displayd();
}
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