Back to For Beginners

Yagh....ifstream

For Beginners

Started by NIm September 19, 2006 11:07 PM

3 comments, last by NIm 17 years, 7 months ago

NIm

210

Author

September 19, 2006 11:07 PM

I'm having trouble getting this to compile.


boost::shared_ptr<model> model::loadmodel(const string filename)
{
    fstream file;
    file.open(filename);

It seems to want filename as a const char*, so how do I convert a string to an array of chars? I tried filename.c_str, but it thought that was <unknown type>

Driv3MeFar

1,080

September 19, 2006 11:11 PM

filename.c_str() should work fine, or I suppose you could just make a char array and copy your string elements into it a character at a time...

Crazyfool

307

September 20, 2006 12:21 AM

well, make the function parameter a const character array. and then when you call it you can just do: filename.c_str() in the call.

If you tried this, sorry.

Leaiva - a 2D Persistent World ORPG

Enigma

1,410

September 20, 2006 02:24 AM

Quote:Original post by NIm
I tried filename.c_str, but it thought that was <unknown type>

You probably forgot to #include <string>. filename.c_str() is the correct way to to it.

You shound probably pass your filename by reference rather than value (const string & filename) and open the file when you initialise it (fstream file(filename.c_str());), since this is more idiomatic C++.

Σnigma