刚开始学c++ primer，讲到iterator时有一段代码，讲解它的用法，我试着把代码补全之后用VC编译出现4个warning，请大家帮忙讲解一下是什么原因。代码如下：
#include <iostream>
#include <string>
#include <vector>

using namespace std;

using std::vector;
using std::string;
using std::cin;
using std::cout;
using std::endl;

int main()
{
    string word;
    vector<string> text;
    while(cin>>word)
    {
        text.push_back(word);
    
    }
    for(vector<string>::iterator i=text.begin(); i != text.end(); ++i)
        cout<<(*i)<<endl;
    
    cout<<endl;  

    return 0;
}

出现4个warning：

F:\Microsoft Visual Studio\MyProjects\practice\practice.cpp(30) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >
,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,int>' : identifier was truncated to '255' characters in the debug information
F:\Microsoft Visual Studio\MyProjects\practice\practice.cpp(30) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::
basic_string<char,std::char_traits<char>,std::allocator<char> > &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,int>' : identifier was truncated to '255' characters in the debug information
f:\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::vector<std
::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information
f:\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::~vector<st
d::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information

practice.obj - 0 error(s), 4 warning(s)

有人知道吗？麻烦帮帮忙~~谢谢

identifier was truncated to '255' characters in the debug information
VC6调试版(Debug)的代码生成器仅仅支持255个字符长度的标识符，因此导致warning C4786的发生。然而正式版(Release)的代码生成器具有更宽的标识符长度限制。
如果生成release版就没有这个问题了.
practice.cpp里存在一个长度很长的标识符.至于是不是,先自己检查一下,不行的话就把这个文件拿上来看看.
VC2005以后的编译器没有这个问题.

依然不是很明白~~practice.cpp里就只有我上面列出的代码，没有超过255个字符长度的标识符吧？

代码没有问题,还是那句话,把practice.cpp放上来吧.这样才能找到问题.