Card shuffling and dealing program using structures, C (gcc)

Card shuffling and dealing program using structures

//gcc 5.4.0
// Fig. 10.3: fig10_03.c
// Card shuffling and dealing program using structures
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define CARDS 52
#define FACES 13

// card structure definition                  
struct card {                                 
   const char *face; // define pointer face   
   const char *suit; // define pointer suit   
}; // end struct card

typedef struct card Card; // new type name for struct card

// prototypes
void fillDeck( Card * const wDeck, const char * wFace[], 
   const char * wSuit[] );
void shuffle( Card * const wDeck );
void deal( const Card * const wDeck );

int main( void )
{ 
   Card deck[ CARDS ]; // define array of Cards

// initialize array of pointers
   const char *face[] = { "Ace", "Deuce", "Three", "Four", "Five",
      "Six", "Seven", "Eight", "Nine", "Ten",
      "Jack", "Queen", "King"};

// initialize array of pointers
   const char *suit[] = { "Hearts", "Diamonds", "Clubs", "Spades"};

srand( time( NULL ) ); // randomize

fillDeck( deck, face, suit ); // load the deck with Cards
   shuffle( deck ); // put Cards in random order
   deal( deck ); // deal all 52 Cards
} // end main

// place strings into Card structures
void fillDeck( Card * const wDeck, const char * wFace[], 
   const char * wSuit[] )
{ 
   size_t i; // counter

// loop through wDeck
   for ( i = 0; i < CARDS; ++i ) { 
      wDeck[ i ].face = wFace[ i % FACES ];
      wDeck[ i ].suit = wSuit[ i / FACES ];
   } // end for
} // end function fillDeck

// shuffle cards
void shuffle( Card * const wDeck )
{ 
   size_t i; // counter
   size_t j; // variable to hold random value between 0 - 51
   Card temp; // define temporary structure for swapping Cards

// loop through wDeck randomly swapping Cards
   for ( i = 0; i < CARDS; ++i ) { 
      j = rand() % CARDS;
      temp = wDeck[ i ];      
      wDeck[ i ] = wDeck[ j ];
      wDeck[ j ] = temp;      
   } // end for
} // end function shuffle

// deal cards
void deal( const Card * const wDeck )
{ 
   size_t i; // counter

// loop through wDeck
   for ( i = 0; i < CARDS; ++i ) {
      printf( "%5s of %-8s%s", wDeck[ i ].face, wDeck[ i ].suit,
         ( i + 1 ) % 4 ? "  " : "\n" );
   } // end for
} // end function deal


run \| edit \| history \| help	1