regular c++ libraries with QT

[willief]

I realize this may be an insanely stupid question but I'm a little unsure.
Can I just use regular C++ with QT? if I write functions using std c++ libraries, will I be able to implement this with my GUI. Specifically, I'm extracting data from the end of a file and I want to display it on LCDNumber's in QT, will I be able to put these together?

thanks