vs2005编译出错求解
我想用操作符重载输入一个堆栈，其他的代码省略了，但在VS2005下出现了下列错误，请高手帮忙解决一下。







#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

template <class T>
class Stack
{
friendostream& operator

<< (ostream&, const Stack<T>&);
friendistream& operator

>>(istream&, Stack<T>&);
public:
Stack(int MaxStackSize =

10);
~Stack(){delete[] stack;}
bool IsEmpty() const

{return top == -1;}
bool IsFull() const {return

top ==MaxTop;}
int Size() const {return

Top+1;}
void Input();
T top() const;
Stack<T>& Add(const T& x);
Stack<T>& Delete(T& x);


private:
int Top;
int MaxTop;
T *stack;
};



template<class T>
istream& operator>>(istream& in,

Stack<T>& s)
{
int size;
cout << "Enter size of stack" <<

endl;
in >> size;

if (size > s.MaxTop + 1) return;

// fail

s.top = size - 1;
cout << "Enter the elements from

top to bottom"<< endl;

for (int i = s.top; i >= 0 ; i-

-)
{
in >> s.stack[i];
}
return in;
}

template <class T>
ostream& operator<<(ostream&

out,const Stack<T>& s)
{
out << "The stack has " <<

(s.top + 1)<< " element(s)" <<

endl;
out << "The element(s) from top

to bottom are"<< endl;

for (int i = s.top; i >= 0 ; i-

-)
{
out << s.stack[i] << ' ';
}

out << endl;

return out;
}



int main()
{
Stack<int> s;
cin>>s;
return 0;
}

error: BaseStack.obj : error

LNK2019: 无法解析的外部符号 "class

std::basic_ostream <char,struct

std::char_traits <char> > & __cdecl

operator >>(class

std::basic_ostream <char,struct

std::char_traits <char> > &,class

Queue <int> const &)" (??6@YAAAV?

$basic_ostream@DU?

$char_traits@D@std@@@std@@AAV01@ABV

?$Queue@H@@@Z)，该符号在函数 _main

中被引用


[解决办法]
模板声明放在.h、.hpp里面