This final version last midifed at 24.10.2015 includes all the asked topics for the the TP2 of QT. I tried to well comment the code so it won't be necessary to have a secondary doccument explanning relative simple functions etc.

The program was developed using a git repository. If you want to access older versions before the code clean and etc you can go to: https://github.com/artursarlo/igr201_tp2

Thanks for all the support. Artur Andrade Motta Sarlo aandrade@telecom-paristech.fr