For you guys: Blackjack in Console!

[S3THST4]

Today, I got bored. I decided to try and write a blackjack game in Console. I've decided to share the code with you guys. As far as I know, it works great. Tomorrow, I'll write a tutorial on the whole thing and submit it.

There is no splitting, and ace = 11. The dealer is just a random number between 15 and 21. It's not very complex.

Source code is licensed under the Eclipse Public License v1.0.

Code: C# [Select]

1. using System;
2.  
3. namespace Blackjack
4. {
5.     class Blackjack
6.     {
7.         static string[] playerCards = new string[11];
8.         static string hitOrStay = "";
9.         static int total = 0, count = 1, dealerTotal = 0;
10.         static Random cardRandomizer = new Random();
11.  
12.         static void Main(string[] args)
13.         {
14.             Console.Title = "Seth's Blackjack!";
15.             Start();
16.         }
17.  
18.         static void Start()
19.         {
20.             dealerTotal = cardRandomizer.Next(15, 22);
21.             playerCards[0] = Deal();
22.             playerCards[1] = Deal();
23.             do
24.             {
25.                 Console.WriteLine("Welcome to Blackjack! You were dealed " + playerCards[0] + " and " + playerCards[1] + ". \nYour total is " + total + ".\nWould you like to hit or stay?");
26.                 hitOrStay = Console.ReadLine().ToLower();
27.             } while (!hitOrStay.Equals("hit") && !hitOrStay.Equals("stay"));
28.             Game();
29.         }
30.  
31.         static void Game()
32.         {
33.             if (hitOrStay.Equals("hit"))
34.             {
35.                 Hit();
36.             }
37.             else if (hitOrStay.Equals("stay"))
38.             {
39.                 if (total > dealerTotal && total <= 21)
40.                 {
41.                     Console.WriteLine("\nCongrats! You won the game! The dealer's total was " + dealerTotal + ".\nWould you like to play again? y/n");
42.                     PlayAgain();
43.                 }
44.                 else if (total < dealerTotal)
45.                 {
46.                     Console.WriteLine("\nSorry, you lost! The dealer's total was " + dealerTotal + ".\nWould you like to play again? y/n");
47.                     PlayAgain();
48.                 }
49.  
50.             }
51.             Console.ReadLine();
52.         }
53.  
54.         static string Deal()
55.         {
56.             string Card = "";
57.             int cards = cardRandomizer.Next(1, 14);
58.             switch (cards)
59.             {
60.                 case 1: Card = "Two"; total += 2;
61.                     break;
62.                 case 2: Card = "Three"; total += 3;
63.                     break;
64.                 case 3: Card = "Four"; total += 4;
65.                     break;
66.                 case 4: Card = "Five"; total += 5;
67.                     break;
68.                 case 5: Card = "Six"; total += 6;
69.                     break;
70.                 case 6: Card = "Seven"; total += 7;
71.                     break;
72.                 case 7: Card = "Eight"; total += 8;
73.                     break;
74.                 case 8: Card = "Nine"; total += 9;
75.                     break;
76.                 case 9: Card = "Ten"; total += 10;
77.                     break;
78.                 case 10: Card = "Jack"; total += 10;
79.                     break;
80.                 case 11: Card = "Queen"; total += 10;
81.                     break;
82.                 case 12: Card = "King"; total += 10;
83.                     break;
84.                 case 13: Card = "Ace"; total += 11;
85.                     break;
86.                 default: Card = "2"; total += 2;
87.                     break;
88.             }
89.             return Card;
90.         }
91.  
92.         static void Hit()
93.         {
94.             count += 1;
95.             playerCards[count] = Deal();
96.             Console.WriteLine("\nYou were dealed a(n) " + playerCards[count] + ".\nYour new total is " + total + ".");
97.             if (total.Equals(21))
98.             {
99.                 Console.WriteLine("\nYou got Blackjack! The dealer's total was " + dealerTotal + ".\nWould you like to play again?");
100.                 PlayAgain();
101.             }
102.             else if (total > 21)
103.             {
104.                 Console.WriteLine("\nYou busted, therefore you lost. Sorry. The dealer's total was " + dealerTotal + ".\nWould you like to play again? y/n");
105.                 PlayAgain();
106.             }
107.             else if (total < 21)
108.             {
109.                 do
110.                 {
111.                     Console.WriteLine("\nWould you like to hit or stay?");
112.                     hitOrStay = Console.ReadLine().ToLower();
113.                 } while (!hitOrStay.Equals("hit") && !hitOrStay.Equals("stay"));
114.                 Game();
115.             }
116.         }
117.  
118.         static void PlayAgain()
119.         {
120.             string playAgain = "";
121.             do
122.             {
123.                 playAgain = Console.ReadLine().ToLower();
124.             } while (!playAgain.Equals("y") && !playAgain.Equals("n"));
125.             if (playAgain.Equals("y"))
126.             {
127.                 Console.WriteLine("\nPress enter to restart the game!");
128.                 Console.ReadLine();
129.                 Console.Clear();
130.                 dealerTotal = 0;
131.                 count = 1;
132.                 total = 0;
133.                 Start();
134.             }
135.             else if (playAgain.Equals("n"))
136.             {
137.                 Console.WriteLine("\nPress enter to close Blackjack.");
138.                 Console.ReadLine();
139.                 Environment.Exit(0);
140.             }
141.        
142.         }
143.     }
144. }
145.  

Enjoy!

[S3THST4]

Edited the code a little to make it less repetitive (the play again is now in a seperate method.

(PS. AJ, if there's a better place for this, please move it there)

[gbertoli3]

Sorry Seth, but there is a minor error in your code. This line:

Code: C# [Select]

1. static string[] playerCards = new string[5];

Lets imagine a user is delt the number 2, then they hit 3 times more; they get the number 2 all three times(highly unlikely, but still possible). Now their total is 8, so they hit again. This is now the 5th time they have hit, say they get a 3. Now they have 11, but what if they want to hit again? They can't because you said they can only have 4 hits(5th hit is an IndexOutOfBounds Exception). So you might want to change your code to:

Code: C# [Select]

1. static string[] playerCards = new string[11];

You need it to be 11 because, you need to allow the user to take 10 hits; if the code was = new string[10] it would throw an exception on the 10th hit, but it should be on the 11th hit; because it is not possible to have 11 hits. Here are the possible lowest hits: 2,2,2,2,3,3,3,3,4,4

Also when writing your tutorial you might want to include my explanation, that way the person reading the tutorial will know exactly what that is for.

Hope this helps.

[S3THST4]

I realized that I put the max index at 5, but I didn't think about it that deep. Thanks, man. I think when I first did it, I was just getting it functioning, then forgot about it.

[gbertoli3]

I like to start out making my code function as close to 100% as possible when I start, that way I don't forget about those little error(s).

Also, when it asks the user if they would like to start a new game and they say, yes; then it asks them again. It says press enter to restart the game. It is a little redundant, but if that is what you intended then it is fine. Otherwise everything else seems to be coded error free(that I can see). Good Job

[S3THST4]

Yeah, it is a little stupid, but I meant for it.

I should probably start doing that; do the little things as well so I don't forget

[gbertoli3]

Yes, a good programmer tests then codes. By that I mean, they logically test(see if it will do what it should), then they code it so it does what they want it too.