using System;

using System.Collections.Generic;

public class Program

{

    static int GenerateId()

    {

        int id=100;

        return id;

    }

    static string GeneratePassword(string name,int age)

    {

        Console.WriteLine("Welcome your password is your name and age together");

        string password=name+Convert.ToString(age);

        return  password;

    }

    static void Cowbull()

    {

        int choice,i,f=0,wordCount;

        string SecretString,GuessString;

        Queue<string> secretword = new Queue<string>();

        string[] a= new string[secretword.Count];

        do

        {

            Console.WriteLine("Welcome to CowBull");

            Console.WriteLine("1)Give Word");

            Console.WriteLine("2)Guess word");

            Console.WriteLine("3)Exit");

            choice=Convert.ToInt32(Console.ReadLine());

            switch(choice)

            {

                case 1:

                    do

                    {

                        Console.WriteLine("Enter the 4 letter secret word");

                        SecretString=Console.ReadLine();

                        if(SecretString.Length!=4)

                        {

                            Console.WriteLine("Enter the 4 letter string and try again!!");

                            break;

                        }

                    }while(SecretString.Length!=4);

                    secretword.Enqueue(SecretString);

                    Console.WriteLine("The Word is added to the queue");

                    break;

                case 2:

                    do

                    {

                        Console.WriteLine("Total words present in the queue are:"+secretword.Count);

                        Console.WriteLine("Enter the choice of word which you want to guess:");

                        wordCount=Convert.ToInt32(Console.ReadLine());

                        Console.WriteLine("Enter your guessed word");

                        GuessString=Console.ReadLine();

                        if(GuessString.Length!=4)

                        {

                            Console.WriteLine("Enter a 4 letter word and try guessing");

                        }

                    }while(GuessString.Length!=4);

                    a=secretword.ToArray();

                    foreach(var String in secretword)

                    {

                        for(i=0;i<a.Length;i++)

                            {

                                if(String==a[i])

                                    {

                                        f++;

                                     }

                            }

                     }

                        if(f==1)

                        {

                            Console.WriteLine("Cow=4,Bull=0");

                            Console.WriteLine("You Won");

                            break;

                        }

                        else if(f==2)

                            Console.WriteLine("Cow=3,Bull=1");

                        else if(f==3)

                            Console.WriteLine("Cow=2,Bull=2");

                        else if(f==4)

                            Console.WriteLine("Cow=1,Bull=3");

                        else

                            Console.WriteLine("Cow=0,Bull=4");

                    break;

                case 3:

                    break;

                default:

                    Console.WriteLine("Enter a valid number and try again");

                    break;

            }

        }while(choice!=3);      

    }

    public static void Main()

    {

        int choice,age,i=0,j,enteredUserId,wish;

        int[] returnedIdValue=new int[10];

        int[] GeneratedId=new int[10];

        string name,enteredPassword;

        string[] GeneratedPassword=new string[10];

        do

        {

            Console.WriteLine("Welcome to the game");

            Console.WriteLine("1)Register");

            Console.WriteLine("2)Login");

            choice=Convert.ToInt32(Console.ReadLine());

            switch(choice)

            {

                case 1:

                    Console.WriteLine("Enter your name");

                    name=Console.ReadLine();

                    Console.WriteLine("Enter your age");

                    age=Convert.ToInt32(Console.ReadLine());

                    returnedIdValue[i]=GenerateId();

                    GeneratedId[i]=returnedIdValue[i]+i;

                    Console.WriteLine("Your user id is:"+GeneratedId[i]);

                    GeneratedPassword[i]=GeneratePassword(name,age);

                    i++;

                    break;

                case 2:

                    int count=0;

                    do

                    {

                        Console.WriteLine("Enter your user id");

                        enteredUserId=Convert.ToInt32(Console.ReadLine());

                        Console.WriteLine("Enter your password");

                        enteredPassword=Console.ReadLine();

                        for(j=0;j<10;j++)

                        {

                            if((enteredUserId==GeneratedId[j])&&(enteredPassword==GeneratedPassword[j]))

                            {

                                Cowbull();

                                count++;

                                break;

                            }

                        }

                        if(count==0)

                            Console.WriteLine("Your Username or Password is incorrect");

                    }while(count!=1);

                    break;

                default:

                    Console.WriteLine("Enter a valid number");

                    break;              

        }

        Console.WriteLine("Do you wish to continue?\\1)Yes\\n2)No");

        wish=Convert.ToInt32(Console.ReadLine());

        if(wish==2)

            break;

    }while(choice!=3);

  }

}