/* File: allocate3.c

  Strings are really dynamically allocated character arrays.
  We use NewArray and FreeBlock from the course library.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"

/* On some systems you should include the following */
#include <malloc.h>

main() {
   char *letters, c ;
   int i ;

   /* Use NewArray to allocate 27 characters */
   letters = NewArray(27,char) ;

   /* Lets use it as an array */
   i = 0 ;
   c = 'a' ;
   while (c <= 'z') {
      letters[i] = c ;
      c++ ;
      i++ ;
   }
   /* Add the null character at the end */
   letters[26] = '\0' ;

   /* print out the array as a string */
   printf("letters: %s\n", letters) ;

   /* Give up use of the memory block */
   FreeBlock(letters) ;
}
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letters: abcdefghijklmnopqrstuvwxyz