/*  StringPointing.c  (c) Kari Laitinen

    http://www.naturalprogramming.com/

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

#include <stdio.h>

int main()
{
   char   string_from_keyboard[ 80 ] ;
   char*  character_in_string ;

   printf( "\n This program manipulates a string by using a"
           "\n pointer. Please, type in a string. \n\n   " ) ;

   gets( string_from_keyboard ) ;

   character_in_string  =  string_from_keyboard ;

   while ( *character_in_string  !=  0 )
   {
      character_in_string  ++ ;
   }

   int  string_length   =   character_in_string  -
                                   string_from_keyboard ;

   printf( "\n String length is %d"
           "\n\n Here is the string in wide form: \n\n   ",
           string_length ) ;

   character_in_string  =  string_from_keyboard ;

   while ( character_in_string  <
                      string_from_keyboard  +  string_length )
   {
      printf( " %c", *character_in_string ) ;
      character_in_string  ++  ;
   }

   printf( "\n\n Here is the string in reverse form: \n\n   " ) ;

   while ( character_in_string  >  string_from_keyboard )
   {
      character_in_string  --  ;
      printf( "%c", *character_in_string ) ;
   }

   printf( "\n" ) ;
}


/*  Here is a sample run of this program:


 This program manipulates a string by using a
 pointer. Please, type in a string.

   Linus Torvalds

 String length is 14

 Here is the string in wide form:

    L i n u s   T o r v a l d s

 Here is the string in reverse form:

   sdlavroT suniL

*/