#include<stdio.h>
#include<malloc.h>
#include<stdlib.h> 
typedef int dataType;
typedef struct node{
    dataType data;
    struct node *next;
}LinkStack;
//初始化顺序栈
LinkStack *InitStack(){
    LinkStack *t = (LinkStack*)malloc(sizeof(LinkStack));
    t->next = NULL;
    return t;
} 
//判断栈是否为空
int Empty(LinkStack *s){
    return s->next == NULL;
} 
//元素x进栈
void Push(LinkStack *s,dataType x){
    node *t = (node*)malloc(sizeof(node));
    t->data = x;
    t->next = s->next;
    s->next = t;
} 
//出栈
void Pop(LinkStack *s){
    if(Empty(s))  exit(1);
    node *p = s->next;
    s->next = p->next;
    free(p);
} 
//取栈顶元素值
dataType GetTop(LinkStack *s){
    return s->next->data;
} 

int main ()
{
    LinkStack *s = InitStack();
    Push(s,80);
    Push(s,90);
    Pop(s);
    Push(s,70);
    printf("栈顶元素为:%d ",GetTop(s));
    
}


链栈的实现_#include