Trouble with ifstream

[jwC5fSEw]

Here's my code:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

class Text {
    public:
        string fileText;

        Text(){}
        Text(string fileName){
            ifstream in(fileName);
            string line;
            while(getline(in, line))
                fileText += line + "\n";
        }
        string contents(){ return fileText; }
};

int main(){
    Text test("exercise7.1.cpp");
    string output = test.contents();
    cout << output << endl;
    return 0;
}

I get the following error on line 12:

C:\CodeBlocks\Exercises\Chapter 7\exercise7.1.cpp||In constructor `Text::Text(std::string)':|
C:\CodeBlocks\Exercises\Chapter 7\exercise7.1.cpp|12|error: no matching function for call to `std::basic_ifstream<char, std::char_traits<char> >::basic_ifstream(std::string&)'|
C:\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\iosfwd|90|note: candidates are: std::basic_ifstream<char, std::char_traits<char> >::basic_ifstream(const std::basic_ifstream<char, std::char_traits<char> >&)|
C:\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\fstream|524|note:                 std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::_Ios_Openmode) [with _CharT = char, _Traits = std::char_traits<char>]|
C:\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\fstream|509|note:                 std::basic_ifstream<_CharT, _Traits>::basic_ifstream() [with _CharT = char, _Traits = std::char_traits<char>]|
||=== Build finished: 1 errors, 0 warnings ===|

What am I doing wrong with ifstream?

[firedraco]

You need to use a c string to open files, so use fileName.c_str().

[jwC5fSEw]

Thanks, that worked.

A C-string is just a character array, right?

[firedraco]

Yes.