I bought a book C++ GUI Programming with QT3. I did the first program which of course is Hello. I ran qmake -project and then qmake hello.cpp. I ran the program and it worked as expected. I moved on to the next program, quit and did the same thing and when I run the program I get:

quit]$ ./quit.cpp
./quit.cpp: line 4: syntax error near unexpected token `('
./quit.cpp: line 4: `int main (int argc, char *argv[])'

I get the same thing now with Hello.

#include <qapplication.h>
#include <qlabel.h>

int main (int argc, char *argv[])
{
QApplication app(argc, argv);
QLabel *label = new QLabel("Hello Qt!", 0);
app.setMainWidget(label);
label->show();
return app.exec();
}


Quit:

#include <qapplication.h>
#include <qpushbutton.h>

int main (int argc, char *argv[])
{
QApplication app(argc, argv);
QPushButton *button = new QPushButton("Quit", 0);
QObject::connect(button, SIGNAL(clicked()),
&app, SLOT(quit()));
app.setMainWidget(button);
button->show();
return app.exec();
}

I didn't add or remove any programs. I am running qt3 on PCLinuxOS and also am getting the same thing on Mandrake 2005 LE. It worked once and then the errors.

I sure would appreciate any help I can get.

Thanks,
Sal

this
makes me wonder which file are you trying to execute here.. it looks to me like you are executing the cpp file ?

if i am reading it wrong, forgive me.. but if not.. you need to compile the source file and then run the executable that is produced..

Well thank you. I made a simple mistake and got so frustrated I couldn't see the forest from the trees. I tried to type ./hello and it said file not found so then I tried ./hello.cpp and got the errors. I was not typing make. Thank you for making me step back and finding my mistake.

yeh, i have been in the "forest for the trees" situation more times than i would like to admit...

good luck.

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