program which show the basics of pointer

#include<iostream.h>
#include<conio.h>
void main()
{
 clrscr();
 int a=10;
 cout<<"value of a: "<<a<<endl;
 cout<<"address of a: "<<&a<<endl;
 cout<<"after operation p=&a "<<endl;
 int *p;
 p=&a;
 cout<<"add stores in p: "<<p<<endl;
 cout<<"add of p: "<<&p<<endl;
 cout<<"value of add stored in p: "<<*p<<endl;
 cout<<"after operation p++ "<<endl;
 p++;
 cout<<"p: "<<p<<endl;
 cout<<"&p: "<<&p<<endl;
 cout<<"*p: "<<*p<<endl;
 p+=10;
 cout<<"after operation p+=10 "<<endl;
 cout<<"p: "<<p<<endl;
 cout<<"&p: "<<&p<<endl;
 cout<<"*p: "<<*p<<endl<<endl<<endl<<endl<<endl;
 cout<<"after operating *p++"<<endl;
 *p++;
 cout<<"p: "<<p<<endl;
 cout<<"&p: "<<&p<<endl;
 cout<<"*p: "<<*p<<endl<<endl<<endl;
 cout<<"after operating ++*p"<<endl;
 ++*p;
 cout<<"p: "<<p<<endl;
 cout<<"&p: "<<&p<<endl;
 cout<<"*p: "<<*p<<endl<<endl<<endl<<endl;
 cout<<"after operating &p++ "<<endl;
 ++&p;                                              //give error
 cout<<"p: "<<p<<endl;
 cout<<"&p: "<<&p<<endl;
 cout<<"*p: "<<*p<<endl;


 getch();
 }