Fixes QCM7 + Prog-7

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Fix Projet-2

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Fix compiler problems

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Ajout lien vers pythia

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Merge pull request #13 from dsarkozi/master

Fix typo Exercices S6