incompatible pointer type

[davidjg]

What am I doing wrong? I'm getting gcc compiler error on line 29.
card.c: In function `main':
card.c:29: warning: passing arg 1 of `deal' from incompatible pointer type

/* Figure 7.24 from chapter 7 */
/* Card shuffling dealing program */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

/* prototypes */
void shuffle( int wDeck[][ 13 ] );
void deal( const int wDeck[][ 13 ], const char *wFace[],
           const char *wSuit[] );

int main( void )
{
	/* initialize suit array */
	const char *suit[ 4 ] = { "Hearts", "Diamonds", "Clubs", "Spades" };

	/* initailize face array */
	const char *face[ 13 ] =
		{ "Ace", "Deuce", "Three", "Four",
		  "Five", "Six", "Seven", "Eight",
		  "Nine", "Ten", "Jack", "Queen", "King" };

	/* initialize deck array */
	int deck[ 4 ][ 13 ] = { 0 };

	srand( time( 0 ) ); /* seed random-number generator */

	shuffle( deck ); /* shuffle the deck */
	deal( deck, face, suit );  /* deal the deck */
	return 0; /* indicates successful termination */
} /* end main */

/* shuffle card in the deck */
void shuffle( int wDeck[][ 13 ] )
{
	int row; /* row number */
	int column; /* column number */
	int card; /* counter */

	/* for each of the 52 cards, chose slot of deck randomly */
	for ( card = 1; card <= 52; card++ ) { /* start for */
	    /* choose new random location until unoccupied slot found */
           do {
              row = rand() % 4;
              column = rand() % 13;
           } while( wDeck[ row ][ column ] != 0 ); /* end do...while */
	} /* end for */
} /* end function shuffle */

/* deal cards in deck */
void deal( const int wDeck[][ 13 ], const char *wFace[],
	    const char *wSuit[] )
{ /* start function deal */
	int card; /* card counter */
	int row; /* row counter */
	int column; /* column counter */

/* deal each of the 52 cards */
for ( card = 1; card <= 52; card++ ) { /* start for */ 
	/* loop through of wDeck */

	for ( row = 0; row <= 3; row++ ) { /* start for */

	      for ( column = 0; column <= 12; column++ ) { /* start for */

		/* if slot contains current card, display card */
		if ( wDeck[ row ][ column ] == card ) { /* start if */
		  printf( "%5s of %-8s%c", wFace[ column ], wSuit[ row ],
		    card % 2 == 0 ? '\n' : '\t' );
			} /* end if */
		    } /* end for */
               } /* end for */
            } /* end for */
} /* end function deal */

[anduril462]

You have wDeck declared const but you're writing to it.

[bernt]

You know, gcc tells you on the next line:

card.c:29: warning: passing argument 1 of ‘deal’ from incompatible pointer type
card.c:9: note: expected ‘const int (*)[13]’ but argument is of type ‘int (*)[13]’

At least, it did for me. maybe your version of gcc is a bit older.

[davidjg]

Thanks guys. That fixed it.