// Craps simulation.
#include <iostream>
#include <cstdlib> // contains prototypes for functions srand and rand
#include <ctime> // contains prototype for function time
using namespace std;
unsigned int rollDice(); // rolls dice, calculates and displays sum
int main()
{
// enumeration with constants that represent the game status
enum Status { CONTINUE, WON, LOST }; // all caps in constants
// randomize random number generator using current time
srand( static_cast<unsigned int>( time( 0 ) ) );
unsigned int myPoint = 0; // point if no win or loss on first roll
Status gameStatus = CONTINUE; // can contain CONTINUE, WON or LOST
unsigned int sumOfDice = rollDice(); // first roll of the dice
// determine game status and point (if needed) based on first roll
switch ( sumOfDice )
{
case 7: // win with 7 on first roll
case 11: // win with 11 on first roll
gameStatus = WON;
break;
case 2: // lose with 2 on first roll
case 3: // lose with 3 on first roll
case 12: // lose with 12 on first roll
gameStatus = LOST;
break;
default: // did not win or lose, so remember point
gameStatus = CONTINUE; // game is not over
myPoint = sumOfDice; // remember the point
cout << "Point is " << myPoint << endl;
break; // optional at end of switch
} // end switch
// while game is not complete
while ( CONTINUE == gameStatus ) // not WON or LOST
{
sumOfDice = rollDice(); // roll dice again
// determine game status
if ( sumOfDice == myPoint ) // win by making point
gameStatus = WON;
else
if ( sumOfDice == 7 ) // lose by rolling 7 before point
gameStatus = LOST;
} // end while
// display won or lost message
if ( WON == gameStatus )
cout << "Player wins" << endl;
else
cout << "Player loses" << endl;
} // end main
// roll dice, calculate sum and display results
unsigned int rollDice()
{
// pick random die values
unsigned int die1 = 1 + rand() % 6; // first die roll
unsigned int die2 = 1 + rand() % 6; // second die roll
unsigned int sum = die1 + die2; // compute sum of die values
// display results of this roll
cout << "Player rolled " << die1 << " + " << die2
<< " = " << sum << endl;
return sum; // return sum of dice
} // end function rollDice
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