VS2005下编译 essential第四章中例子遇到的问题
Stack.h文件中如下

#pragma once

class Stack
{
public:
bool   push( const string& );
  bool   pop(  string &elem );
bool   peek( string &elem );

bool   empty();
bool   full();
  
  int    size() { return _stack.size(); }

  Stack(void);
public:
  ~Stack(void);

private:
  vector<string> _stack;
};

void fill_stack( Stack &stack, istream &is = cin )
{
  string str;
  while ( is >> str && ! stack.full() )
    stack.push( str );

  cout << "Read in " << stack.size() << " elements\n";
}

inline bool
Stack::empty()

{ 
  return _stack.empty(); 
}

bool
Stack::pop( string &elem ) 
{
  if ( empty() )
    return false;

  elem = _stack.back();
  _stack.pop_back(); 

  return true;
}

inline bool
Stack::full()
{ 
  return _stack.size() == _stack.max_size(); 
}

bool
Stack::peek( string &elem ) 
{
  if ( empty() )
    return false;

  elem = _stack.back();
  return true;
}
bool
Stack::push( const string &elem ) 
{
  if ( full() )
    return false;

  _stack.push_back( elem );
  return true;
}

然后teststack.cpp文件如下
只是想先简单测试下

#include <string>
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

#include "Stack.h"

int main()
{
  Stack blue;
  fill_stack(blue,cin);

}
}

错误很多，比如
Error1error C4430: missing type specifier - int assumed. Note: C++ does not support default-intVS2005\projects\teststack2\teststack2\stack.h6
还有
Error2error C2143: syntax error : missing ',' before '&'visual studio 2005\projects\teststack2\teststack2\stack.h6
Error3error C2061: syntax error : identifier 'string' C:\my documents\visual studio 2005\projects\teststack2\teststack2\stack.h7
菜鸟请大家帮忙看看。谢谢了。 vs2005
[解决办法]
缺少string头文件，在Stack.h中加入以下内容

#include<string>
using std::string;
class Stack{……};

[解决办法]
1)
Stack.h文件,有很多非inline函数的定义，这不是很好。
例如：
void fill_stack( Stack &stack, istream &is = cin )
{
string str;
while ( is >> str && ! stack.full() )
stack.push( str );

cout << "Read in " << stack.size() << " elements\n";
}
不是inline
2)
int main()
{
Stack blue;
fill_stack(blue,cin);

}//多余的大括号，应该
return 0;
}