Error!!!

[Drue]

I don't understand this error message. Can someone please help.

G:\Flash drive\C++ Programs\Drue Made\Read a text file\main.cpp|105|error: no matching function for call to 'std::basic_ifstream<char, std::char_traits<char> >::open(std::string&)'|

[PanGalactic]

open doesn't accept a std::string as an argument. It takes a const char*.