/* File: allocate.c

   This file demonstrates memory allocation.
*/

#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 ;

   /* get a block of memory with 26 bytes */
   letters = malloc(26) ;

   /* Lets use it as an array */
   i = 0 ;
   c = 'a' ;
   while (c <= 'z') {
      letters[i] = c ;
      c++ ;
      i++ ;
   }

   /* print out the characters */
   for (i = 0 ; i < 26 ; i++) {
      printf("%c", letters[i]) ;
   }
   printf("\n") ;

   /* Give up use of the memory block */
   free(letters) ;
}