Cant get QFile to write (even using the QT documentation example!

[mobucl]

Hi, I need to write some text to a file and i am trying to use QFile however i have a few problems, first i thought it was my code so i created a new project with just the example given in the QT documentation and i cant even get that to work! So using the example (where i replace out.txt with D://out.txt to write to my D drive):

#include <QtCore/QCoreApplication>
#include<QTextStream>
#include<QFile>
 
int main()
{
    QFile file("D://out.txt");
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
      return;
 
    QTextStream out(&file);
    out << "The magic number is: " << 49 << "\n";
  }

#include <QtCore/QCoreApplication>
#include<QTextStream>
#include<QFile>

int main()
{
    QFile file("D://out.txt");
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
      return;

    QTextStream out(&file);
    out << "The magic number is: " << 49 << "\n";
  }

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first I get the error:

..\filewrite\main.cpp:10: error: return-statement with no value, in function returning 'int'

If i comment out the if statement it runs but i don't create a file. i thought maybe i need to close the file first so i added file.close but that didn't do anything either.

Can someone please help!

Thanks

Matt