File Handling!!!

[mebingj]

I cannot write to the file and read from it
here is my code..

write:

QFile file("dd.txt");
file.open(QIODevice::WriteOnly);
QTextStream out(&file);
out<<d;
file.close();

QFile file("dd.txt");
file.open(QIODevice::WriteOnly);
QTextStream out(&file);
out<<d;
file.close();

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read:

QFile f("dd.txt");
f.open(QIODevice::ReadOnly | QIODevice::Text);
QTextStream stream(&f);
l=stream.readLine();
f.close();

QFile f("dd.txt");
f.open(QIODevice::ReadOnly | QIODevice::Text);
QTextStream stream(&f);
l=stream.readLine();
f.close();

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[Lykurg]

Please notice the [code] tags, and what returns open()? Or errorString()?

[squidge]

"cannot write to the file and read from it" is too ambigous. The file is not created? The file is empty? The file was written but you can't read?

As already stated, please add error checking into your code and tell us exactly what happens.

[ChrisW67]

The program will attempt to create this file in its working directory. Often that is a non-writeable location (e.g. "C:\Program Files\Your Program" on Windows).