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#include <iostream> //for standard I/O
#include <ctime> //needed to access the computer's clock
#include <cstdlib> //necessary for rand() and RAND_MAX
using namespace std;
void PrintHeading(int, int, int); //prototype for printing initial heading
int GetBet(int); //prototype for getting bet(input) from user
int DrawNum (int); //prototype for function that generates random number
int GetGuess(int, int); //prototype for getting guesses from user
int main()
{
const int START_BALANCE = 1000, //user initially receives $1000
MIN = 1, //minimum number that can be guessed
MAX = 100; //maximum number that can be guessed
int betAmount, //amount that the user wants to bet
numDrawn, //the random number from the computer
guess, //the guess from the user
winnings, //the amount that the user won after the round
money = START_BALANCE, //the user's money balance(initialized with $1000)
guessNumber = 0, //number of the guess(1-6)
gamesWon = 0, //how many games the user has won
totalGames = 0; //total games the user has played
unsigned int seed; //seeds rand()
bool won = false; //initializes won as false
double percentageWon; //calculates the percentage of games won out of total played
char playAgain; //user inputs Y/N about whether they want to play another round
//call function that prints overall heading
PrintHeading(money, MIN, MAX);
/*assign the return of the GetBet function to betAmount
and changes user's money balance to reflect their bet*/
betAmount = GetBet(money);
money = money - betAmount;
/*obtain value for the time from the computer's clock and with
it call srand to initialize "seed" for the rand() function*/
seed = static_cast<unsigned>(time (NULL));
srand (seed);
//get number drawn by computer
numDrawn = DrawNum(MAX);
do //do loop
{
guessNumber++; //increment the number of guesses
cout << endl << "Please enter guess #" << guessNumber << ": "; //prints the prompt to gain user's guess
guess = GetGuess(MIN, MAX); //assigns return from GetGuess function to guess
if(guess < numDrawn) //if the user's guess is less than the computer's number
cout << "Try again, that guess is too low!" << endl << endl;
else if(guess > numDrawn) //if the user's guess is more than the computer's number
cout << "Try again, that guess is too high!" << endl << endl;
else if(guess == numDrawn) //if user guesses the computer's number
{
won = true; //reset won to true
cout << "That's the correct number!" << endl << endl; //print winning statement
}
else //changes any invalid guesses to "too low"
cout << "Try again, that guess is too low!" << endl << endl;
} //do loop
while (won != true && guessNumber < 6); //while user's guess is incorrect and guessnumber is under 6
if(won) //if won is true
{
gamesWon++; //increment games won
totalGames++; //increment total games
winnings = betAmount / guessNumber; //initialize winnings to specific formula
money += winnings; //add any winnings to user's money balance
percentageWon = 100.0 * (gamesWon/totalGames);//initialize percentage won with formula
cout << "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl
<< "You won this round!" << endl //print closing message telling winning statistics
<< "You have won $" << winnings << " in this round." << endl
<< "You now have $" << money << " total." << endl
<< "You have won " << percentageWon << "% of the games you have played." << endl
<< "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl;
} //if won is true
else //else
{
totalGames++; //increment total games played
percentageWon = 100.0 * (gamesWon/totalGames); //percentage of games won out of total
cout << "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl //print closing message telling losing statistics
<< "Sorry! The correct number was " << numDrawn << "." << endl
<< "You lost $" << betAmount << " in this round." << endl
<< "You now have $" << money << " total." << endl
<< "You have won " << percentageWon << "% of the games you have played." << endl
<< "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl << endl << endl;
}
cout << "Would you like to play another round? Enter Y/N: "; //ask the user if they want to play again
cin >> playAgain; //read input (Y/N) from user
if(playAgain != 'Y' || playAgain != 'y') //if playAgain is not yes
{ //print final message
cout << "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl
<< "Thanks for playing the High-Low Betting Game!" << endl
<< "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=" << endl << endl;
return 0; //return zero
}
void PrintHeading(int balance, int min, int max) //function that prints the initial heading of game
{ //PrintHeading function
cout << "===============================================" << endl
<< "* Welcome to the High-Low Betting Game!\t *" << endl
<< "* You have $" << balance << " to begin the game.\t *" << endl
<< "* Valid guesses are numbers between " << min << " and " << max << ".*" << endl
<< "===============================================" << endl;
return;
} //PrintHeading function
int GetBet(int balance) //function that prompts and obtains bet from user
{ //GetBet function
int bet;
cout << "Please enter the amount of money you want to bet: ";
cin >> bet; //bet is input from user
if(bet > 0 && bet <= balance) //if bet is valid(between zero and total money balance
return bet; //return the bet to main
else //if input is invalid
{
cout << "That is not a valid bet!" << endl
<< "Please enter a valid bet: "; //prompt for a new valid bet
cin.clear();
cin.ignore(numeric_limits<streamsize>::max(),'\n');
cin >> bet;
}
} //GetBet function
int DrawNum(int max) //function that calculates random number
{ //DrawNum function
double x = RAND_MAX + 1.0; //x and y are both auxiliary
int y; //variables used to do the
//calculation
y = static_cast<int> (1 + rand() * (max / x));
return (y); //return random number to main
} //DrawNum function
int GetGuess(int min, int max) //function that gets user's guess
{ //GetGuess function
int userGuess;
cin >> userGuess; //user inputs guess
if (userGuess >= min && userGuess <= max)
return userGuess; //if guess is between 1 and 100, return it to main
} //GetGuess function
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