crapsgame.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Tutorial 12: CrapsGame.cpp
// This application plays a simple craps game.
#include <iostream> // required to perform C++ stream I/O
#include <string>   // required to access string functions
#include <ctime>    // contains prototype for function time

// contains function prototypes for srand and rand
#include <cstdlib>

using namespace std; // for accessing C++ Standard Library members
   
int rollDice( void ); // function prototype

// function main begins program execution
int main()
{
   // constants representing winning dice rolls
   const int LUCKY_SEVEN = 7;
   const int YO_LEVEN = 11;

   // constants representing losing dice rolls
   const int SNAKE_EYES = 2;
   const int TREY = 3;
   const int BOX_CARS = 12;
   const int CRAPS = 7; // loses only after first roll

   // enumeration constants represent game status
   enum Status { CONTINUE, WON, LOST };

   int sum;      // stores sum of the dice
   int myPoint;  // stores the player's point
   string input; // stores input after each dice roll

   Status gameStatus; // can contain CONTINUE, WON or LOST

   // randomize random number generator using current time
   srand( time( 0 ) ); 

   sum = rollDice(); // first roll of the dice

   // determine game status and point based on sum of dice
   switch ( sum ) 
   {
      // win on first roll
      case LUCKY_SEVEN: 
	   case YO_LEVEN:            
         gameStatus = WON;
         break;

      // lose on first roll
      case SNAKE_EYES: 
	   case TREY: 
	   case BOX_CARS:             
         gameStatus = LOST;
         break;

      // remember point
      default:            
         gameStatus = CONTINUE;
         myPoint = sum;
         cout << "Point is " << myPoint << endl;
         break; // optional   

   } // end switch 

   // repeat while the game is not complete
   while ( gameStatus == CONTINUE )  
   {
      cout << "\nPress Enter to continue...";
      getline( cin, input ); // pauses until user presses Enter

      sum = rollDice(); // roll dice again

      // determine game status
      if ( sum == myPoint ) // win by matching point
      {
         gameStatus = WON;
      } // end if
      else if ( sum == CRAPS ) // lose by rolling 7
      {
         gameStatus = LOST;
      } // end else if

   } // end while 

   // display won or lost message
   if ( gameStatus == WON )
   {
      cout << "Player wins" << endl << endl;
   } // end if
   else
   {
      cout << "Player loses" << endl << endl;
   } // end else

   return 0; // indicates successful termination

} // end function main

// roll dice, calculate sum and display results
int rollDice( void )
{
   int die1;    // stores the value of the first die
   int die2;    // stores the value of the second die
   int diceSum; // stores the sum of the dice values

   die1 = 1 + rand() % 6; // pick random die1 value
   die2 = 1 + rand() % 6; // pick random die2 value
   diceSum = die1 + die2; // sum die1 and die2

   // display the results of this roll
   cout << "\nPlayer rolled " << die1 << " + " << die2
        << " = " << diceSum << endl;

   return diceSum; // return the sum of the dice

} // end function rollDice


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 * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and               *
 * Pearson Education, Inc. All Rights Reserved.                           *
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