/*  Addresses.c  (c) Kari Laitinen

    http://www.naturalprogramming.com/

    2013-11-25 File created.
    2013-11-25 Last modification.

    By running this program you can find you how memory
    is allocated for variables and arrays.
*/

#include <stdio.h>

int main()
{
   int   int_variable ;
   char  char_variable ;

   int   array_of_integers[ 4 ] ;
   char  some_string[ 16 ] ;

   long   long_variable ;
   double double_variable ;

   printf( "\n THE SIZES OF SOME DATA TYPES:\n"
           "\n  char :   %d bytes"
           "\n  int :    %d bytes"
           "\n  long :   %d bytes"
           "\n  double : %d bytes",
           sizeof( char ), sizeof( int ), sizeof( long ), sizeof( double ) ) ;

   printf("\n\n  DATA ITEM                MEMORY ADDRESS\n"
          "\n  \"int_variable\"           %X"
          "\n  \"char_variable\"          %X"
          "\n  \"array_of_integers[ 0 ]\" %X"
          "\n  \"array_of_integers[ 1 ]\" %X"
          "\n  \"array_of_integers[ 2 ]\" %X"
          "\n  \"array_of_integers[ 3 ]\" %X"
          "\n  \"some_string[ 0 ]\"       %X"
          "\n  \"some_string[ 1 ]\"       %X"
          "\n  \"some_string[ 2 ]\"       %X"
          "\n  \"some_string[ 15 ]\"      %X"
          "\n  \"long_variable\"          %X"
          "\n  \"double_variable\"        %X\n",
         (long) &int_variable, (long) &char_variable, 
         (long) &array_of_integers[ 0 ], (long) &array_of_integers[ 1 ],
         (long) &array_of_integers[ 2 ], (long) &array_of_integers[ 3 ],
         (long) &some_string[ 0 ], (long) &some_string[ 1 ],
         (long) &some_string[ 2 ], (long) &some_string[ 15 ],
         (long) &long_variable, (long) &double_variable ) ;
}

/*  Here is a sample run of this program:


 THE SIZES OF SOME DATA TYPES:

  char :   1 bytes
  int :    4 bytes
  long :   4 bytes
  double : 8 bytes

  DATA ITEM                MEMORY ADDRESS

  "int_variable"           22FF6C
  "char_variable"          22FF6B
  "array_of_integers[ 0 ]" 22FF50
  "array_of_integers[ 1 ]" 22FF54
  "array_of_integers[ 2 ]" 22FF58
  "array_of_integers[ 3 ]" 22FF5C
  "some_string[ 0 ]"       22FF40
  "some_string[ 1 ]"       22FF41
  "some_string[ 2 ]"       22FF42
  "some_string[ 15 ]"      22FF4F
  "long_variable"          22FF3C
  "double_variable"        22FF30

*/