#include "stack.h"

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

Stack *StackCreate(int size, int n) {

Stack *stack = (Stack *)malloc(sizeof(Stack));

if (!stack) {

printf("malloc failed\n");

exit(-1);

}

stack->data = (void *)malloc(size * n);

stack->size = size;

stack->n = n;

stack->top = -1;

}

void StackRelease(Stack *st) {

if (st) {

free(st);

free(st->data);

}

}

int StackPush(Stack *st, const void *data) {

if (st->top == st->n - 1) {

printf("栈已经满了\n");

return 0;

}

st->top ++;

memcpy(st->data + st->top * st->size, data, st->size);

return 1;

}

int StackPop(Stack *st, void *data) {

if (st->top < 0) {

printf("栈已经空了\n");

return 0;

}

memcpy(data, st->data + st->top * st->size, st->size);

st->top --;

return 1;

}