Heavy flavours analysis in proton-proton collisions at the LHC with ALICE

The extremely high energies that will be reached at the Large Hadron Collider (LHC) at CERN will allow studying the production of heavy flavours (beauty and charm) with high statistics in both proton-proton and Pb-Pb collisions. The study of open charm (D) and beauty (B) mesons in Pb-Pb collisions will be a powerful tool to investigate the production of heavy flavours and their interaction with the medium produced in such collisions (QGP). Heavy flavour yields will provide also a normalization for quarkonia production. We will present a general overview of the ALICE collaboration heavy flavour program, then we will focus on the analysis and reconstruction strategies developed for the study of the charmed (D) mesons by the ALICE collaboration for proton-proton collisions, with special emphasis on the charged D mesons. Finally, some expected results obtained with MonteCarlo production will be shown.