Back To C++ Pointers

//program to create a pointer to a structure variable which has a pointer to nested structure variable 
#include<iostream.h>
#include<conio.h>
struct salary
{
    int da;
    int hra;
    int basic;
};
struct address
{
    int houseno;
    char street[20];
    char city[20];
    char state[20];
};
struct employee
{
    int ecode;
    char ename[20];
    salary *sal;
    address *addr;
};
void main()
{
    clrscr();
    employee *e;
    cout<<"\nenter employee code ";
    cin>>e->ecode;
    cout<<"\nenter employee name ";
    cin>>e->ename;
    cout<<"\nenter employee basic salary ";
    cin>>e->sal->basic;
    cout<<"\nenter employee hra ";
    cin>>e->sal->hra;
    cout<<"\nenter employee da ";
    cin>>e->sal->da;
    cout<<"\nenter houseno ";
    cin>>e->addr->houseno;
    cout<<"\nenter street ";
    cin>>e->addr->street;
    cout<<"\nenter city ";
    cin>>e->addr->city;
    cout<<"\nenter state ";
    cin>>e->addr->state;
    cout<<"\nDisplaying data ";
    cout<<"\nemployee code is "<<e->ecode;
    cout<<"\nemployee name is "<<e->ename;
    cout<<"\nemployee basic salary is "<<e->sal->basic;
    cout<<"\nemployee hra is "<<e->sal->hra;
    cout<<"\nemployee da is "<<e->sal->da;
    cout<<"\nemployee house no is "<<e->addr->houseno;
    cout<<"\nemployee street is "<<e->addr->street;
    cout<<"\nemployee city is "<<e->addr->city;
    cout<<"\nemployee state is "<<e->addr->state;
    getch();
}