Cannot compile fstream open method.

[sever]

Hello,

I've a code starting like

#include <iostream>
#include <fstream>
#include <cstdio>
#include <string>
#include <cstdlib>
#include <cmath>

using namespace std;
      (....)

And the g++ compiler, in GNU/Linux environment, when reach,

        string ori_file;
        ori_file = "./...";
                (...)
        fstream ent_file;
        ent_file.open (ori_file, ios::in | ios::binary);

throws me this,

main.cc: In function ‘int main()’:
main.cc:167: error: no matching function for call to ‘std::basic_fstream<char, std::char_traits<char> >::open(std::string&, std::_Ios_Openmode)’
/usr/include/c++/4.3/fstream:756: note: candidates are: void std::basic_fstream<_CharT, _Traits>::open(const char*, std::_Ios_Openmode) [with _CharT = char, _Traits = std::char_traits<char>]

Why ? What am I doing wrong ???

S.

[kbw]

It doesn't take an std::string, it takes a const char*
ent_file.open(ori_file.c_str(), ios::in | ios::binary);

[sever]

Thanks a lot,

Now works fine.

S.