stack.c
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#include "stack.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#define STACKSIZE 20
struct stack_handle {
int top; /* pierwsze wolne miejsce na stosie */
int dane[STACKSIZE];
}
struct stack_handle*
init()
{
struct stack_handle* s =
(struct stack_handle*)malloc(sizeof(struct stack_handle));
s->top = 0;
return s;
}
void finalize(struct stack_handle* s)
{
free(s);
}
void clear(struct stack_handle* s)
{
s->top = 0;
}
void push(struct stack_handle* s, int a)
{
assert(s->top < STACKSIZE);
s->dane[s->top++] = a;
}
int pop(struct stack_handle* s)
{
assert(s->top > 0);
return s->dane[--s->top];
}