I''m an I/O Newbie. Something I swear is messed up with ifstream. Please see if there are any errors. Source Code
hydra.dat hydralisk = 60 Take it to the Xtreme!

quote: Original post by XtremeIdentity




hydra.dat

hydralisk = 60

If that is in the data file, thats the problem. ifstream will read until it reaches white space and put that into the variable its reading from. You dont do ``hydralisk = 60''''. If you want to do it like that, consider using an INI file and the getPrivateProfile*(...) family of functions.

ERROR..ERROR: you are not checking for errors

int main()
{
ifstream hfile;
int mydata;
hfile.open("afile.ext");
if (hfile==NULL)
{
cout<<"OUCH! Something happened"< return 0;
}
//now that it's okay read it in
hfile >> mydata;
cout<return 0;
}

something like that
also make sure that your data file is in the executable's path
I have scratched my head for hours to figure that situation out.



After looking at athe post.. I see what when wrong
Research in the strtok function.. that I'll do it! =)


[edited by - GoofProg on April 5, 2002 8:37:59 PM]

this aint c style crap file io, and you dont check to see if an object that isnt a pointer is NULL

use fstream::is_open() (it returns a bool)

How do I write dat files then?

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->Take it to the Xtreme!<-
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Do you think C is a crap language.. that hurts =)
Remember that C++ is only C +1.

quote: Original post by XtremeIdentity
How do I write dat files then?

Use your text editor. A .dat file can be anything.

quote: Original post by Anonymous Poster
this aint c style crap file io, and you dont check to see if an object that isnt a pointer is NULL

use fstream::is_open() (it returns a bool)

You can. A pointer will be allocated and will point to something or it''s a NULL value

What''s the proper syntax I mean. Like how would the compiler know this one variable points to this thing?

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->Take it to the Xtreme!<-
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For fstream a .fail() operator is included. Thats what I always use. Try
if(indata.fail())
cout << "Error opening the file!";

Alos, you might try giving it a specific path name eg. "C:\\Program\\file.dat" or something.

And yes, the double backslashes are needed, it has to do with the escape operators, it will not work with single slashes!

"cogito, ergo sum" -Descartes