/* File: package.C

   Implementation of the Package derived class
*/

#include <stdio.h>
#include <stdlib.h>

#include "package.h"


/* default constructor */
Package::Package() { 
   length = height = width = 0.0 ;  /* sides have length 0.0 by default */
   inside = NULL ;
}


/* create a package with specified sides */
Package::Package(float len, float ht, float wd) {
   length = len ;
   height = ht ;
   width = wd ;
   inside = NULL ;
}


/* report vital stats for package */
void Package::identify() {
   printf("This package has length=%f, height=%f & width=%f\n",
      length, height, width) ;
   if (inside == NULL) {
      printf("   This package is empty\n") ;
   } else {
      printf("   This package contains the following:\n") ;
      inside->identify() ;
   }
}


/* store item in this package, if the item fits and if this
   package is empty.
   return 1 if item fits 0 otherwise  
*/
int Package::Store (Package *item) {
   int r ;

   if (inside != NULL) {
      return 0 ;
   }

   r = compare(*this, *item) ; /* "this" means this package */
   if (r > 0) {
      inside = item ;
      return 1 ;
   } else {
      return 0 ;
   }
}


/* Return contents and set inside to NULL */
Package *Package::Empty() {
   Package *temp ;

   temp = inside ;
   inside = NULL ;
   return temp ;
}


/* Return stored item */
Package *Package::Content() {
   return inside ;
}