Path to the previous folder

Hi

I've stupid problem... I don't know how to give a correct path to the previous folder or file. In my project I've folder where I keep sources.cpp but header isn't in this folder, so how can I give path of the header to the sources? Have I write

Code:

---

#include "/home/zerg/workspace/header.h"

---

?

example

header.h
[FOLDER] - > source1.cpp , source2.cpp

by default it is

Code:

---

#include "header.h

---

but it's wrong because header isn't in the same folder...

ps
sorry for chaos of this post ;p If in this post are any mistakes pleas correct me ;d

Best Regards

../ in linux ..\ in windows

Use INCLUDEPATH:

Code:

---

INCLUDEPATH += path/to/headers

---