Question

Game of Craps C++

#include <iostream>

using namespace std;
void roll (int *); // using pointer to catch the random variable value of two dicerolls at one time .

//these global variable with static variable win use to operate the working of code .
//static win, account because two times input given by user to add the diceroll with win number and
//account (means balance of user) .

static int account = 100;
static int win = 0;
int bet = 0;

int main ()
{
char c;
int diceroll1, diceroll2;
cout << "Welcome to the CRAPS game. ";
  
while(1){   
cout << "You have $"<<account<<". Do you want to roll (y/n)?";
cin >> c;

if (c == 'y')
{
cout << "How much do you want to bet? ";
cin >> bet;
diceroll1 = rand () % 6 + 1;
diceroll2 = rand () % 6 + 1; // rand()%6+1 get the value between 6 to 1 and also included 6 or 1 both .
roll (&diceroll1); // send the address of diceroll values .
roll (&diceroll2);
  
if (win == 7)
{
cout << "You rolled a " << diceroll1 << " and a " << diceroll2 <<
   ". Your total is 7. You win! ";
   account+=bet;
   cout<<"You have $"<<account<<" ";
}
else if (win == 11)
{
   cout << "You rolled a " << diceroll1 << " and a " << diceroll2 <<
   ". Your total is 11. You win! ";
account+=bet;
cout<<"You have $"<<account<<" ";
  
}
else if(win==2 ||win==3 ||win==12){
cout<<"You lose! ";
}
  
}
else if(c=='n'){
cout<<"Thank you for playing.";
break;
}
}
return 0;
}

void roll (int *a)
{
win = win + *a;
  
}

Modify the craps program to keep track of your bank. After each hand, you have “Do you want to roll again (y/n/s). If you select “s” you can save your amount of money. The game then repeats the question so you can continue or press n to quit. When you first start the program it asks, “Do you want to load a previous session?” If you say ‘y,’ your bank is updated to the amount it was when it was saved. If you say ‘n,’ the game proceeds as before. If there was no previous session, obviously the program won’t be able to find your save file, and should give an appropriate message like, “Sorry, no save file exists on this computer.”

Answer 1

Here is the modified code

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
void roll (int *);       // using pointer to catch the random variable value of two dicerolls at one time .

//these global variable with static variable win use to operate the working of code .
//static win, account because two times input given by user to add the diceroll with win number and
//account (means balance of user) .

static int account = 100;
static int win = 0;
int bet = 0;

int
main ()
{
char c;
int diceroll1, diceroll2;
cout << "Welcome to the CRAPS game. ";
cout << "Do you want to load a previous session (y/n)?";
cin >> c;
if (c == 'y')
{
// load the file from system and update win
ifstream crapfile;
string line;
crapfile.open("crap.txt", ios::in);
if (crapfile.is_open())
{
while ( getline (crapfile,line) )
{
//cout << line << '\n';
account = stoi(line);
}
crapfile.close();
}

else cout << "Sorry, no save file exists on this computer.\n";
crapfile.close();
}
else if(c != 'n')
{
cout << "Invalid input. You should enter y/n. Exiting..";
exit(1);
}
  
cout << "You have $" << account << ". Do you want to roll (y/n)?";
cin >> c;
while (1)
{
//cout << "You have $" << account << ". Do you want to roll (y/n)?";
//cin >> c;

if (c == 'y')
   {
   cout << "How much do you want to bet? ";
   cin >> bet;
   diceroll1 = rand () % 6 + 1;
   diceroll2 = rand () % 6 + 1;   // rand()%6+1 get the value between 6 to 1 and also included 6 or 1 both .
   //roll (&diceroll1);   // send the address of diceroll values .
   //roll (&diceroll2);
   // Find total value of dice by adding
   win = diceroll1 + diceroll2;

   if (win == 7)
   {
   cout << "You rolled a " << diceroll1 << " and a " << diceroll2
       << ". Your total is 7. You win! ";
   account += bet;
   cout << "You have $" << account << " ";
   }
   else if (win == 11)
   {
   cout << "You rolled a " << diceroll1 << " and a " << diceroll2
       << ". Your total is 11. You win! ";
   account += bet;
   cout << "You have $" << account << " ";

   }
   else if (win == 2 || win == 3 || win == 12)
   {
   cout << "You lose! ";
   }
   else {
   cout << "You rolled a " << diceroll1 << " and a " << diceroll2
       << ". Your total is " << win << endl;
   }

   }
   else if (c == 's')
   {
   cout << "Saving your balance in file .";
   ofstream outfile("crap.txt");
   outfile << account;
   outfile.close();
   cout << "Your balance has been saved successfully.\n";
   }
else if (c == 'n')
   {
   cout << "Thank you for playing.";
   break;
   }
   cout << "You have $" << account << ". Do you want to roll again(y/n/s)?";
cin >> c;
  
}
return 0;
}

void
roll (int *a)
{
win = win + *a;

}

Sample output of the program as below.

Welcome to the CRAPS game. Do you want to load a previous session (y/n)?y
You have $120. Do you want to roll (y/n)?y
How much do you want to bet? 23
You rolled a 2 and a 5. Your total is 7. You win! You have $143 You have $143. Do you want to roll again(y/n/s)?s
Saving your balance in file .Your balance has been saved successfully.
You have $143. Do you want to roll again(y/n/s)?y
How much do you want to bet? 10
You rolled a 4 and a 2. Your total is 6
You have $143. Do you want to roll again(y/n/s)?y
How much do you want to bet? 22
You rolled a 6 and a 2. Your total is 8
You have $143. Do you want to roll again(y/n/s)?n
Thank you for playing.