/************************************************************
 *
 *                      stack.h
 *
 *  Include file for the simple stack module.  This example
 *  illustrates how modules are implemented.
 *
 ***********************************************************/

#ifndef STACK_H
#define STACK_H

/*
 *  The Stack type is used as a handle to a stack object.
 *  User programs don't know the stack data structure, but
 *  only a pointer is passed, so they don't need to know.
 */

typedef struct stack_struct* Stack;

/*
 *  Declarations of the functions in the stack module.
 */

Stack stack_create( int size );
Stack stack_destroy( Stack );
void stack_push( Stack, int item );
int stack_pop( Stack );
int stack_peek( Stack );
int stack_full( Stack );
int stack_empty( Stack );

#endif