I cant use console application

hor_313

hi

when i build a console program i cant see results in terminal page . just opened a empty terminal page and doesnt show anythings!

i dont know why and i'll be happy if anyone helps me

Serenity

Can you please post your written code to see, what's wrong?
I am not sure, what you meen with "doesn't show anything". Which system are you using?

MuldeR

This is far too vague to say anything helpful.

Please say at least which platform you are on and show a meaningful piece of your code.

hor_313

thanks dears .

i have not any code. just i tested it and didnt get any result .

my simple code is :
@
#include <QCoreApplication>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
cout<<"aaaa";
//printf("ssss");
return a.exec();
}
@

and i am in ubuntu 12.04 OS with qtcreator 2.5 and qt4.8.1 sdk.

when i execute that code a empty terminal box opens and i can write into but it doesnt any work!

hor_313

!http://upcity.ir/images/23171340833418290646.png(problem's_picture)!

hor_313

this code is in .pro-file too :

@
QT += core

QT -= gui

TARGET = test1
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp
@

MuldeR

I'm not quite sure about how this is on Linux, but on the Windows platform applications can be compiled as "Windows" or as "Console" applications. That's a Linker option. If you compile as "Windows", which is the default for GUI apps, then the app doesn't have a console. And even if you run it from a console - or allocate a console at runtime via AllocConsole() function - output to the console via "stdout" or "cout" doesn't work. Bummer! That's because the C Runtime never binds the stdout/stderr or cout/cerr to the console - because it doesn't expect a console to be there. There are some workarounds for that. Maybe on Linux there is a similar issue. I'm not quite sure. Maybe somebody more familiar with Linux can give an answer about that...

batista

@
//This is working!!!, put endl for end cout

#include <QCoreApplication>
#include <iostream>
 
using namespace std;
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    cout<<"aaaa" << endl;
    //printf("ssss");
    return a.exec(&#41;;
}

@

hor_313

[quote author="batista" date="1361676392"]@
//This is working!!!, put endl for end cout

#include <QCoreApplication>
#include <iostream>
 
using namespace std;
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    cout<<"aaaa" << endl;
    //printf("ssss");
    return a.exec(&#41;;
}

@[/quote]

i put it but didnt work !

batista

@
//My test in debian and ubuntu 12.10 work fine.

batista@dellxps:~/NetBeansProjects/QtTes$ cat test.cpp
#include <QCoreApplication>
#include <iostream>

using namespace std;
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    cout<<"aaaa" << endl;
    //printf("ssss");
    return a.exec&#40;&#41;;
}

batista@dellxps:~/NetBeansProjects/QtTes$ ./QtTes
aaaa

@