/*
 *  =====================================================================
 *  ptrcls2.c -- first of a series of examples to illustrate pointers and
 *               arrays at work and their relationships.
 *
 *  Copyright (C) 1998 by Mark Austin and David Mazzoni.
 *                                                                     
 *  This software is provided "as is" without express or implied warranty.
 *  Permission is granted to use this software on any computer system,
 *  and to redistribute it freely, subject to the following restrictions:
 * 
 *  1. The authors are not responsible for the consequences of use of
 *     this software, even if they arise from defects in the software.
 *  2. The origin of this software must not be misrepresented, either
 *     by explicit claim or by omission.
 *  3. Altered versions must be plainly marked as such, and must not
 *     be misrepresented as being the original software.
 *  4. This notice is to remain intact.
 * 
 *  Written by : David Mazzoni
 *  =====================================================================
 */

#include <stdio.h>   /* for printf() prototype */
#include <string.h>  /* for strlen()           */

int main( void ) {
static char caArray[] = "character array";    
char * cpChar = caArray;                /* pointer to character array */
int iCnt;                               /* counter for indexing       */

   /* [a] : Show some things like size of each, values, etc. */

   printf( "The value of \"caArray\" is %x\n", caArray );
   printf( "The value of \"cpChar\"  is %x\n", cpChar );
   printf( "The size of \"caArray\"  is %d\n", sizeof( caArray ) );
   printf( "The size of \"cpChar\"   is %x\n", sizeof( cpChar ) );
   printf( "The address(&) of \"caArray\" is %x\n", &caArray );
   printf( "The address(&) of \"cpChar\"  is %x\n", &cpChar );

   /* [b] : Manipulate character array */

   printf("\n");
   for( iCnt = 0; iCnt < strlen(caArray); ++iCnt ) {
      printf( "\ncaArray[%-2d] = %c\tcpChar[%-2d] = %c %-2d[cpChar] = %c"
              "\t *(cpChar + %-2d) = %c",
              iCnt, caArray[iCnt], iCnt, cpChar[iCnt],
              iCnt, iCnt[cpChar], iCnt, *(cpChar+iCnt) );
   }

   /* [c] : Now use the pointer as the variable */

   printf("\n\nUsing pointer incrementing for caArray = ");
   for( iCnt = 0; iCnt < strlen( caArray ); ++iCnt )
        putchar( *cpChar++ );
   puts(" ");
}