C语言实现链式栈

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

typedef struct node
{
    int data;
    struct node* next;
}Node;

typedef struct line_stack 
{
    Node* top;
    int len;
}Stack;

Stack* creat_stack()
{
    Stack* line = (Stack*)malloc(sizeof(Stack));
    line->top = NULL;
    line->len = 0;
    return line;
}

Node* creat_node(int data)
{
    Node* node = (Node*)malloc(sizeof(Node));
    node->data = data;
    node->next = NULL;
    return node;
}

bool empty_stack(Stack* sta)
{
    return !sta->len;
}

void push_stack(Stack* sta, int data)
{
    Node* node = creat_node(data);
    if (empty_stack(sta)) {
        sta->top = node;
    } else {
        node->next = sta->top;
        sta->top = node;
    }
    sta->len++;
}

Node* top_stack(Stack* sta)
{
    if (empty_stack(sta))
        return NULL;
    return sta->top;
}

bool pop_stack(Stack* sta)
{
    if (empty_stack(sta))
    {
        return false;
    }
    Node* node = sta->top;
    sta->top = node->next;
    printf("pop_stack:%d\n",node->data);
    free(node);
    sta->len--;
    return true;
}

void destory_stack(Stack* sta)
{
    while (pop_stack(sta))
    {
        ;
    }
    free(sta);
}

int main()
{
    int i;
    Stack* sta = creat_stack();
    for (i = 1; i <= 5; i++) {
        push_stack(sta, i);
        printf("%d\n", top_stack(sta)->data);
    }
    destory_stack(sta);
    return 0;
}