string class

**jjg** · 09-12-2002

I am having a problem with ifstream and strings.

I have:

#include<iostream>
#include<fstream>
#include<string>
#include<cstring.>
#include<iomanip.h>

other declarations ..................................
......................

string filename;
ifstream fin;

cout<<"enter filename";

getline(cin, filename);

fin.open(filename.data());*****when compiler gets to this point
**it says data is not a member of string

I checked in my book and it says that s.data() is part of the string class. I was hoping that someone could help me to figure out why I can't compile past this point. I am using Borland C++ 5.02.

thanks

**MrWizard** · 09-12-2002

I thought it was...

string filename;

filename.str( );

**Dr. Bebop** · 09-12-2002

I don't think this should work anyway, data() returns an array with each character in the string an element in the array but the last element isn't a null character. c_str() returns the same as data() but there's a null character at the end, open needs that null to know where to stop. So your call should be more like this.

Code:

fin.open( filename.c_str() );

You don't need the period after cstring and iomanip doesn't have an extension. Make sure that somewhere you have using namespace std; declared or none of this stuff will work.

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