/******************************* Card Game **********************************/

#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
#include<time.h>
#include<iomanip.h>
enum Suit{clubs, diamonds,hearts,spades};
const int jack=11;
const int queen=12;
const int king=13;
const int ace=14;
class card
{
	private : int num;
		  Suit suit;
	public :  void display();
		  void init(int n,Suit s)
		  {
			suit=s;
			num=n;
		  }
};
void show(card deck[]);
void card::display()
{
	cout<<setw(5);
	if (num>=2&&num<=10)
	cout<<num;
	else
	switch(num)
	{
		case jack : { cout<<"J";
			      break; }
		case queen : { cout<<"Q";
			       break; }
		case king : { cout<<"K";
			      break; }
		case ace : { cout<<"A";
			     break; }
	}
	switch(suit)
	{
		case clubs : { cout<<char(5);
			       break; }
		case diamonds : { cout<<char(4);
				  break; }
		case hearts : { cout<<char(3);
				break; }
		case spades :{ cout<<char(6);
			       break; }
	}
}
void main()
{
	clrscr();
	card deck[21];
	int no,j,i; Suit su;
	char chaa;
	do
	{
		clrscr();
		for(j=0,i=0;j<21;i+=3,j++)
		{
			no=(j%13)+2;
			su=Suit(i%4);
			deck[j].init(no,su);
		}
		cout<<"\n\nCards you chose are: \n";
		show(deck);
		char ch;card temp;
		cout<<"\n\nWant to shuffle?(y/n)  ";
		cin>>ch;
		if(ch!='n')
		{
			do
			{
				randomize();
				for(j=0;j<21;j++)
				{
					int k= random(21);
					temp=deck[j] ;
					deck[j]=deck[k];
					deck[k]=temp;
				}
				cout<<"\nThe shuffled deck is: \n";
				show(deck);
				cout<<"Want to shuffle again ?(y/n) ";
				}while(( ch=getche())!='n');
			}
			cout<<"\nChoose and memorize any card from the set. ";
			int ct=1;
			card swap[21];
			do
			{
				cout<<"\n\nIn which row(1/2/3) is your card present ? ";
				cin>>i;
				switch(i)
				{
					case 1: for(j=0;j<7;j++)
					{
						temp=deck[j];
						 deck[j]=deck[j+7];
						 deck[j+7]=temp;
					}
					break;
					case 2 : break;
					case 3 : for(j=7;j<14;j++)
					{
						temp=deck[j+7];
					 deck[j+7]=deck[j];
					 deck[j]=temp;
					 }
					break;
				}
				if(ct<3)
				{
				//card arr[21];
				for(i=0;i<21;i++)
				{
					swap[i]=deck[i];
				}
				for(i=0,j=2;i<21;i++,j+=3)
				{
					deck[i]=swap[j-2];
					if((j==20)||(j==21))
					j-=20;
				}
			}
			show(deck);
			ct++;
		}while(ct<4);
		cout<<"\n\nThe card you chose is : \n ";
		deck[10].display();
		getch();
		cout<<"\nWanna play again(y/n):";
		chaa= getche();
	}
	while((chaa=='y')||(chaa=='Y'));
}
void show(card deck[])
{
	int j;
	for(j=0;j<21;j++)
	{
		deck[j].display();
		if(!((j+1)%7))
		{
			cout<<endl;
		}
	}
}