/*
 * ISA 563, Spring 2011
 * Copyleft by Muhammad Abdulla
 */

#ifndef STACK4_INCLUDED
#define STACK4_INCLUDED

#define S Stack

typedef struct S *S;

extern S    stack_new();
extern void stack_push(S s, int item);
extern int  stack_pop(S s);
extern int  stack_empty(S s);
extern int  stack_full(S s);
extern void stack_free(S s);

#undef S

#endif // STACK4_INCLUDED