Dynamic Default constructor & Destructor

#include <iostream>

#include <string.h>

using namespace std;

class A{

int *id;

string  name;

string address;

float *salary;

public:

A (int x =0, string  n="unknown" ,string ad ="city=unknown country =unknown ",float s=0 )    {

id = new int;

*id =x;

name = n;

address=ad ;

salary =new float;

*salary =s;  }

~A()      {

cout<<"\t\t\tThe destroctor of: " <<endl;

cout<<"Id is :  "<<*id  <<endl;

cout<<"Name :  "<<name <<endl;

cout<<"Address  :  "<<address <<endl;

cout<<"Salary :  "<<*salary <<endl;        }

void display ()     {       cout<<"The id is :  "<<*id  <<endl;

cout<<"The Name is :  "<<name <<endl;

cout<<"The Address is :  "<<address <<endl;

cout<<"The Salary is :  "<<*salary <<endl;       }};

int main()     {     A u1;

A u2(1,"hunnan");

A u3(1,"hunnan malik","City =rwl pindi",50000.0);

u1.display();

u2.display();

u3.display();

return 0;       }

Output: