顺序栈代码实现&&stack库

#include<iostream>
using namespace std;
const int N=;
typedef int Elemtype;

struct SqStack
{
    Elemtype *base;
    int top;

    void Init();
    void clear();
    bool Empty();
    void Push(Elemtype e);
    void Pop();

    Elemtype Gettop();

};

void SqStack::Init()
{
     base=new Elemtype[N];
     top=-;
}

void SqStack::clear()
{
    top==-;
}

bool SqStack::Empty()
{
    return top==-;
}

void SqStack::Push(Elemtype e)
{
    if(top==N-) return;
    top++;
    base[top]=e;
}

void SqStack::Pop()
{
    if(top==-) return;
    top--;
}

Elemtype SqStack::Gettop()
{
    return base[top];
}

int main()
{
    int n;
    cin>>n;
    SqStack st;
    st.Init();
    for(int i=;i<n;i++)
    {
        int t;
        cin>>t;
        st.Push(t);
        }

        while(st.Empty()==false)
        {
            int t=st.Gettop();
            cout<<t<<endl;
            st.Pop();
            }
            st.clear();
            return ;
 } 

#include<iostream>
#include<stack>
using namespace std;
const int N=;
void run()
{
    stack <int>s;
    int n;
    for(int i=;i<N;i++)
    {
        s.push(i+);
    }

    cout<<s.size();

    while(s.empty()==false)
    {
        int t=s.top();
        cout<<t<<" ";
        s.pop();
    }
}

int main()
{
    run();
    return ;
}