cout doesn't output to command prompt however will redirect to text file

Asked Oct 18 '19 at 14:21

Active Oct 18 '19 at 14:27

Viewed 28 times

I'm trying out my dev environment making sure everything works and my code compiles just fine, and if I run it in QT Creator, I see the output in the command log window, but I don't see any output at the actual command prompt itself. I can redirect the output (see picture) and it will list in a text file, but nothing on the console. I've tried QTextSteam as well as standard cout.

// #include <QTextStream>
#include <iostream>
using namespace std;

int main() {
 //QTextStream(stdout) << "Hello, world!" << endl;
 cout << "Hello, world!" << endl;
 cout << "Hello, world!" << endl;
 cout << "Hello, world!" << endl;
 //cout.flush();
 return 0;
}

output:

C:\Users\user\Documents\dev\hello\release>hello.exe

C:\Users\user\Documents\dev\hello\release>hello > test.txt

C:\Users\user\Documents\dev\hello\release>type test.txt
Hello, world!
Hello, world!
Hello, world!

edited Oct 18 '19 at 14:27

François Andrieux

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asked Oct 18 '19 at 14:21

thistleknot

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Please copy-paste the text, instead of providing images of text. Command prompt, can be copy-pasted from. – Algirdas Preidžius Oct 18 '19 at 14:24
I corrected myself – thistleknot Oct 18 '19 at 14:26
There is nothing in the code that would explain what you are observing. The problem might lie with your console or with how the project was compiled. But there isn't anything posted here that could explain it. – François Andrieux Oct 18 '19 at 14:27
I exported the file to another computer and similar symptoms. If there is nothing in the code to explain it. Which stackexchange would be a better place to ask this question? – thistleknot Oct 18 '19 at 14:28
How do you compile the code? – HolyBlackCat Oct 18 '19 at 14:29
Perhaps your question is related to [this one](https://stackoverflow.com/questions/17382047/qt-printing-to-terminal) or [this one](https://stackoverflow.com/questions/2627900/what-can-explain-stdcout-not-to-display-anything). – François Andrieux Oct 18 '19 at 14:29
qmake and then mingw32-make – thistleknot Oct 18 '19 at 14:30
What happens if you compile it directly with `g++`? – HolyBlackCat Oct 18 '19 at 14:32
"... but I don't see any output at the actual command prompt itself" - and how *exactly* did you run the program from the command line? – Jesper Juhl Oct 18 '19 at 14:32
thank you @FrançoisAndrieux that was it! Mark as duplicate! add CONFIG += console to my .pro file – thistleknot Oct 18 '19 at 14:32

cout doesn't output to command prompt however will redirect to text file

0 Answers0