C++ program to demonstrate copy constructor

#include <iostream> // copy comstructor
#include<string>
using namespace std;
class SomeData
{
private:
int *pd;
string id;
public:
SomeData(SomeData &ref)
{
cout<<"copy constructor called"<<endl;
pd=new int(*ref.pd);
id="copy constructor";
}
SomeData(string name,int n)
{
pd=new int(n);
id=name;
cout<<"constructor for "<<id<<endl;
}
~SomeData()
{
cout<<"Destructor for "<<id<<endl;
delete pd;
}
void display()
{
cout<<"id="<<id<<endl;
cout<<"*pd="<<*pd<<endl;
}

};
int main()
{
SomeData s1("First",9);
SomeData s2=s1;
s2.display();
return 0;
}