#include<assert.h>
#include<iostream>
using namespace std;
const int stackIncreament=20;

template<class T>
class SeqStack{
public:
	T *elements;//存放栈中元素的栈数组
	int top;
	int maxSize;

	SeqStack(int sz=50);
	~SeqStack(){
		delete[]elements;
	}
	void Push(T& x);
	bool Pop(T& x);
	bool getTop(T& x);
	bool IsEmpty(){
		return (top==-1)?true:false;
	}
	bool IsFull(){
		return (top==maxSize-1)?true:false;
	}
	int getSize(){
		return top+1;
	}
	void MakeEmpty(){
		top=-1;
	}
	friend ostream& operator<<(ostream& os,SeqStack<T>& s){
		os<<"top="<<s.top<<endl;
		for(int i=0;i<=s.top;i++){
			os<<i<<":"<<s.elements[i]<<endl;
		}
		return os;
	}
};

template<class T>
SeqStack<T>::SeqStack(int sz):top(-1),maxSize(sz){
	elements=new T[maxSize];
	assert(elements!=NULL);
}

template<class T>
void SeqStack<T>::Push(T& x){
	if(IsFull()==true){
		cout<<"插不进来！"<<endl;
		return;
	}else
		elements[++top]=x;
}

template<class T>
bool SeqStack<T>::Pop(T& x){
	if(IsEmpty()==true)
		return false;
	x=elements[top--];
	return true;
}

template<class T>
bool SeqStack<T>::getTop(T &x){
	if(IsEmpty==true)
		return false;
	x=elements[top];
	return true;
}

void main(){
	SeqStack<char> seq;
	int num;	
	cout<<"输入插入栈中的数据个数：";
	cin>>num;
	char start=97;
	for(int i=0;i<num;i++){
		
		seq.Push(start);
		start++;
	}
	cout<<seq;
	seq.Pop(start);
	cout<<seq;
}

运行截图：