#include "stdafx.h"
#include<stdio.h>
#include<malloc.h>
#define N 20000
typedef struct astack *stack;
typedef struct astack
{
    int top,maxtop;
    int*data;
}astack;

stack stacklnit (int size)
{
    stack s=(stack)malloc(sizeof*s);
    s->data=malloc(size*sizeof(int));
    s->maxtop=size-1;
    s->top=-1;
    return s;
}

void push(int x,stack s)
{
    if(s->top>=s->maxtop)printf("stack is full");
    else s->data[++s->top]=x;
}

int pop(stack s)
{
    if(s->top<0)printf("stack is empty");
    else return s->data[s->top--];
}

int main(int argc, char* argv[])
{    
    int data[N],a;



    stack s=stacklnit(N);
    s->top=data[0];    

    
    push(100, s);
    push(200, s);
    push(300, s);
    a=pop( s);
    printf("%d\n",a);
    return 0;
}

高手们，我这那出错了，能告诉我吗。