Tower of Hanoi

#include<iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace std;

int main()
{
	int n,i;
	char choise;
	cout<<"                                Cairo University          "<<endl;
	cout<<"                     Faculty of computers and information"<<endl;
	cout<<"                               CS - MATH SOCIETY"<<endl;
	cout<<"                            ---------------------"<<endl<<endl;
	cout<<"                                INFINITY  GROUP "<<endl;
	cout<<"                                      <><>\n"<<endl;
	do
	{
		int sum=1;
		cout<<"\n\n\t\t\tThe number of disks = ";
		cin>>n;
		for(i=0;i<n;i++)
			sum*=2;
		sum-=1;
		cout<<"\n\n\tThe number of minimum trials  = "<<sum<<endl;
		int  x;

   printf( "How many disks? " );
   scanf( "%d", &n );
   puts( "\n\n" );

   for (x=1; x < (1 << n); x++)
      printf( "\t\tmove from pole %i to pole %i.\n",
		 (x&x-1)%3, ((x|x-1)+1)%3 );
		cout<<"\n\n\n\tDo you want check another number?(y/n).  ";
		cin>>choise;
	}while(choise=='y'||choise=='Y');
	cout<<endl<<endl<<endl;
	cout<<"                          *** WITH MY BEST WISHES ***"<<endl;
	cout<<"                                INFINITY  GROUP "<<endl;
	cout<<"                                      <><>"<<endl;
	cout<<"Type EXIT to close the program   : ";
	cin>>choise;
	return 0;
}