fig16_02.cpp

这是C＋＋编程经典的书上实例的源代码。 （英文名是《C＋＋ how to program》第3版）

// Fig. 16.2: fig16_02.cpp
// Card shuffling and dealing program using structures 
#include <iostream>

using std::cout;
using std::cin;
using std::endl;
using std::ios;

#include <iomanip>

using std::setiosflags;
using std::setw;

#include <cstdlib>
#include <ctime>

struct Card {
   char *face;
   char *suit;
};

void fillDeck( Card * const, char *[], char *[] );
void shuffle( Card * const );
void deal( Card * const );

int main()
{
   Card deck[ 52 ];
   char *face[] = { "Ace", "Deuce", "Three", "Four", 
                    "Five", "Six", "Seven", "Eight", 
                    "Nine", "Ten", "Jack", "Queen", 
                    "King" };
   char *suit[] = { "Hearts", "Diamonds", 
                    "Clubs", "Spades" };

   srand( time( 0 ) );           // randomize 
   fillDeck( deck, face, suit );
   shuffle( deck );
   deal( deck );
   return 0;
}

void fillDeck( Card * const wDeck, char *wFace[], 
               char *wSuit[] )
{
   for ( int i = 0; i < 52; i++ ) {
      wDeck[ i ].face = wFace[ i % 13 ];
      wDeck[ i ].suit = wSuit[ i / 13 ];
   }
}

void shuffle( Card * const wDeck )
{
   for ( int i = 0; i < 52; i++ ) {
      int j = rand() % 52;
      Card temp = wDeck[ i ];
      wDeck[ i ] = wDeck[ j ];
      wDeck[ j ] = temp;
   }
}

void deal( Card * const wDeck )
{
   for ( int i = 0; i < 52; i++ )
      cout << setiosflags( ios::right ) 
           << setw( 5 ) << wDeck[ i ].face << " of " 
           << setiosflags( ios::left ) 
           << setw( 8 ) << wDeck[ i ].suit 
           << ( ( i + 1 ) % 2 ? '\t' : '\n' );
}



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