Question

"Blackjack 40" my teacher created this assignment and I need help. He is using c++ and has provided this template: Further instructions are below the template!

#include <iostream>
#include <cmath>
#include <cstdlib>
using namespace std;

//Will return a number from 1 to 13, representing the face of a card
int draw_card() { return rand() % 13 + 1; }

int main() {
const int BET = 10;
//This will allow you to control chance, to make testing easier
cout << "Please choose a random seed, or 0 to use the current time:\n";
int seed = 0;
cin >> seed;
if (seed == 0) srand(time(0));
else srand(seed);

cout << "Welcome to Blackjack-40!\n\n";

//YOU: Create an integer named money and set it to 100

//YOU: Do this (and all lines below) in an infinite loop...

cout << "You currently have $" << money << " and are betting $" << BET << endl;

//YOU: For each player...

//YOU: Make an integer called total holding the total value of the players card and initialize it to 0
//YOU: Using a for loop, deal 4 cards to the player
int card = draw_card(); //This is how you deal a card
//YOU: Handle face cards. I.e., if the card is >= 10 set the card to 10

//YOU: Handle aces (a 1 is worth 11)
cout << "You drew a " << card << endl;

//YOU: Add the card's value to the total

//Then we print the total
cout << "The total value of your cards is: " << total << endl;

//YOU: Make an infinite loop for the players drawing cards until they bust or stay or quit
cout << "Do you wish to 1) Hit or 2) Stay or 3) Quit?\n";

//YOU: After the players are done, draw cards for the dealer until they get a 35 or higher, or bust
cout << "Dealer drew a " << card << endl;

//YOU: Check for loss. If the player has 0 dollars or less, they lose
cout << "YOU LOSE! GAME OVER!\n";
//YOU: Check for win. If the player has 200 dollars or more, they win
cout << "A WINNER IS YOU! GAME OVER!\n";
}

For this assignment, you will be playing a variant of Blackjack where the
player tries to get as close to 40 as possible without going over. The player
starts with $100 and always $10 per hand. If they go over, they "go bust" and
pay $10 to the dealer.

Once they finish, the dealer will go, and will draw cards until they get a 36
or higher. If the dealer goes over 40, the dealer goes bust and pays $10 to
the player if they have not gone bust.

If the dealer doesn't go bust, then the dealer's score is compared with the
score of the player. If they player is higher than the dealer's, they gain
$10, they lose $10 if they have less, and no money is exchanged on a tie.

The value of a card is the face value (i.e. an 8 is worth 8 points, a
jack/queen/king is worth 10) except for aces, which count either as 11 or 1,
whichever is more advantageous for the player. I recommend when you start just
always treating it as an 11 and worrying about handling this after doing
everything else.

Playing a game of Blackjack-40:
1) The player is initially dealt four cards
2) If they are dealt a 40, they print "BLACKJACK 40!" and they win $20.
3) They can choose to hit or stay or quit. Hit means they are dealt another card.
If they hit and go over 40, they go bust and pay $10 to the dealer. If they
hit they can continue hitting until they bust or choose to stay or quit.
Stay means they keep their total and the dealer gets to go.
Quit means the game terminates.
4) After the player is done, deal cards for the dealer until they get a 35
or higher.
5) Handle the money payments as described above. If the player wins they gain
$10, if they lose they lose $10, if they tie no money is exchanged.
6) If the player hits $200 they win the game, if they hit $0 they lose the
game, and the game ends.
7) Otherwise, go back up to #1 and do it again

Answer 1

Code :-

#include <iostream>
#include <cmath>
#include <cstdlib>
#include <ctime>
using namespace std;

//Will return a number from 1 to 13, representing the face of a card
int draw_card() { return rand() % 13 + 1; }
int main() {
   const int BET = 10;
   //This will allow you to control chance, to make testing easier
   cout << "Please choose a random seed, or 0 to use the current time:\n";
   int seed = 0;
   cin >> seed;
   if (seed == 0) srand(time(0));
   else srand(seed);

   cout << "Welcome to Blackjack-40!\n\n";

   //YOU: Create an integer named money and set it to 100
   int money = 100;
   int option;

   //YOU: Do this (and all lines below) in an infinite loop...
   while (true)
   {
       cout << "-----------------------------------------------------------------------------------"<<endl; //added this for readability
       cout << "You currently have $" << money << " and are betting $" << BET << endl;

       //YOU: For each player...
       //YOU: Make an integer called total holding the total value of the players card and initialize it to 0
       int total=0,dealer_total=0; //---mentioned for each player
      
       //YOU: Using a for loop, deal 4 cards to the player
       for(int i=0;i<4;i++)
       {
           int card = draw_card(); //This is how you deal a card
           //YOU: Handle face cards. I.e., if the card is >= 10 set the card to 10
           if (card>=10) card=10;
           //YOU: Handle aces (a 1 is worth 11)
           if (card==1) card=11;
           cout << "You drew a " << card << endl;
           //YOU: Add the card's value to the total
           total = total + card;
       }
       if (total == 40)
       {
           cout<<"Blackjack 40!!!"<<endl;
           money=money+BET+BET;
       }
       else if(total>40)
       {
           cout << "The total value of your cards is: " << total << endl;
           cout<<"YOU LOST THIS ROUND!"<<endl;
           money = money - BET;
       }
       else
       {
           //---Then we print the total
           cout << "The total value of your cards is: " << total << endl;

           //YOU: Make an infinite loop for the players drawing cards until they bust or stay or quit
           while (true)
           {
               cout << "Do you wish to 1) Hit or 2) Stay or 3) Quit?\n";
               cin>>option;
               if (option==1)
               {
                   int card = draw_card();
                   if (card>=10) card=10;
                   if (card==1) card=11;
                   cout << "You drew a " << card << endl;
                   total = total + card;
                   cout << "The total value of your cards is: " << total << endl;
                   if(total>40)
                   {
                       cout<<"YOU LOST THIS ROUND!"<<endl;
                       money = money - BET;
                       break;
                   }
                   if (total == 40)
                   {
                       cout<<"Blackjack 40!!!"<<endl;
                       money=money+BET+BET;
                       break;
                   }
               }
               else if (option==2)
               {
                   //YOU: After the players are done, draw cards for the dealer until they get a 35 or higher, or bust
                   for(;dealer_total<35;)
                   {
                       int card = draw_card();
                       if (card>=10) card=10;
                       if (card==1) card=11;
                       cout << "Dealer drew a " << card << endl;
                       dealer_total = dealer_total + card;
                   }
                   //---Used this cout to check value of dealers cards
                   cout << "The total value of dealer's cards is: " << dealer_total << endl;
                  
                   //---This means that either the dealer goes bust or both have a total less than 40
                   //---but yours is closer to it
                   if (dealer_total>40 || total>dealer_total)
                   {
                       cout<<"YOU WON THIS ROUND!"<<endl;
                       money=money+BET;
                   }
                   else if(total<dealer_total)
                   {
                       cout<<"YOU LOST THIS ROUND!"<<endl;
                       money = money - BET;
                   }
                   else if(total==dealer_total)
                   {
                       cout<<"ROUND TIED!"<<endl;
                   }
                   break;
               }
               else if (option==3)
               {
                   //---added this to display when user quits
                   cout<<"THANK YOU FOR PLAYING !!!"<<endl;
                   return 0;
               }
               else cout<<"Please enter a valid option"<<endl;
           }
       }
       //YOU: Check for loss. If the player has 0 dollars or less, they lose
       if (money==0)
       {
           cout << "YOU LOSE! GAME OVER!\n";
           break;
       }
       //YOU: Check for win. If the player has 200 dollars or more, they win
       else if (money==200)
       {
           cout << "A WINNER IS YOU! GAME OVER!\n";
           break;
       }
   }
   return 0;
}

Output :-

The last image with "ROUND TIED!" is on another play of the game.