为何如此多的warning?

[firecityplans]

写如下程序，不知为何如此多达175个警告，警告在最后面还请大侠们指示！

#include < iostream >
#include < vector >
#include < algorithm >
#include < map >
#include < set >
#include < fstream >
#include < iterator >
#include < string >
using namespace std;

int main()
{

ifstream ifile( "input.txt" );
if( !ifile )
{
cerr<< " !! unable to open the necessary files. \n";
return -1;
}

string tword;
string ia[ 6 ] = { "a", "an", "or", "the", "and", "but" };


map<string,int> words;
set < string > iset;

iset.insert( ia, ia+6 );

while( ifile>>tword )
{
if( iset.count( tword ) )
continue;

words[ tword ]++;
}

map < string, int >::iterator it = words.begin();

bool ischeck = true;
string cstring;

while( ischeck )
{
cout<< " Input the word you want to check: ";
cin>>cstring;
if( words.count( cstring ) )
cout<<"it exits and the count is "<<words[ cstring ];
else
cout<<" sorry ! it is not in! ";
cout<<endl;
cout<<" do you like another word? Y \ N";
char is;
cin>>is;
if( is == 'n' || is == 'N' )
ischeck = false;
}
return 0;
}

警告见另外一贴。

[lijinfenghust]

warning:c2406 line:(0) 赶快把另外一个帖子贴出来，或者结贴...
warning:c2406 line:(1) 赶快把另外一个帖子贴出来，或者结贴...
warning:c2406 line:(2) 赶快把另外一个帖子贴出来，或者结贴...

[firecityplans]

--------------------Configuration: 3-1p - Win32 Debug--------------------
Compiling...
3-1p.cpp
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::basic_string<char,std::char_traits<cha
r>,std::allocator<char> > >,std::allocator<int> >' : identifier was truncated to '255' characters in the debug information
d:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::ba
sic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(29) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > >,std::allocator<int> >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::basic_string<char,std::char_traits<cha
r>,std::allocator<char> > >,std::allocator<int> >::const_iterator' : identifier was truncated to '255' characters in the debug information
d:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::ba
sic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(29) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > >,std::allocator<int> >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::basic_string<char,std::char_traits<cha
r>,std::allocator<char> > >,std::allocator<int> >::iterator' : identifier was truncated to '255' characters in the debug information
d:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::ba
sic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(29) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > >,std::allocator<int> >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::basic_string<char,std::char_traits<cha
r>,std::allocator<char> > >,std::allocator<int> >::_Node' : identifier was truncated to '255' characters in the debug information

[firecityplans]

d:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::ba
sic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(29) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > >,std::allocator<int> >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,
int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::basic_string<char,std::char_traits<cha
r>,std::allocator<char> > >,std::allocator<int> >::const_iterator' : identifier was truncated to '255' characters in the debug information
d:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::pair<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > const ,int>,std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >::_Kfn,std::less<std::ba
sic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<int> >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(29) : see reference to class template instantiation 'std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,int,std::less<std::basic_string<char,std::char_traits<
char>,std::allocator<char> > >,std::allocator<int> >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::set<std::bas
ic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::_Kfn,std::less<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
d:\program files\microsoft visual studio\vc98\include\set(33) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std:
:allocator<char> >,std::set<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::alloc
ator<char> > > >::_Kfn,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(30) : see reference to class template instantiation 'std::set<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char
>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::set<std::bas
ic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::_Kfn,std::less<std
::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::const_iterator' : identifier was truncated to '255' characters in the debug information
d:\program files\microsoft visual studio\vc98\include\set(33) : see reference to class template instantiation 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std:
:allocator<char> >,std::set<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::alloc
ator<char> > > >::_Kfn,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' being compiled
E:\studyvc\essential c plus plus\ch03\practice\3-1p.cpp(30) : see reference to class template instantiation 'std::set<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char
>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' being compiled
d:\program files\microsoft visual studio\vc98\include\xtree(118) : warning C4786: 'std::_Tree<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::set<std::bas
ic_string<char,std::char_traits<char>,std::allocator<char> >,std::less<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::_Kfn,std::less<std
::basic_string<char,std::char_traits<char>,std::allocator<char> > >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::iterator' : identifier was truncated to '255' characters in the debug information

[猫已经找不回了]

因为你用Vc6,所以
在头文件前面加上
#pragma warning(disable:4786)

[coverallwangp]

vc6 stl库的问题

[firecityplans]

再有的错误有劳大侠们到博客里见，这些错误的容量太大了。

[lingyin55]

把#pragma warning(disable:4786)放在宏定义的最前面
或者利用下面设置
去除所有警告，在工程设置里设置警告级别。
Setting-> C/C++ -> Warning Level : None

[lijinfenghust]

vc6 stl 库比较垃圾。。。

[liao05050075]

这是VC6的STL的问题。好像是函数名扩展的时候超过了长度（有点记不清了）。一般不用理会它。
直接#pragma warning(disable:4786)，屏蔽它就行了

[帅得不敢出门]

gcc编译只有一个warning
vc6嘿嘿，早就不用了。

cout <<" do you like another word? Y \ N"; 
改成
cout <<" do you like another word? Y / N"; 

[firecityplans]

可是还是有一个警告的：warning C4129: 'N' : unrecognized character escape sequence

[firecityplans]

很好，谢谢大家。解决了。再问，为什么VC++不支持这些呢？什么环境更好的支持？

[zgjxwl]

呵呵。。

[hiboys]

disable它就可以了。
所谓的std却是各自编译器厂商自己实现的，象java一样都用sun的就好了。
std在各编译器间能移植也好啊

[lingyin55]

比vc6版本高级一点的基本都能很好的支持
[Quote=引用 12 楼 firecityplans 的回复:]
很好，谢谢大家。解决了。再问，为什么VC++不支持这些呢？什么环境更好的支持？
[/Quote]

[hiboys]

sorry,sun已经哦了

[qingkongxiaoyang]

使用VC6时加入“#pragma warning(disable:4786)”
也屏蔽不了。。