Charm Physics at CLEO-c

The latest results are presented from CLEO-c on W annihilation decays of the D+ and Ds+ mesons. This includes the decay constants and the first observation of the decay Ds+→pn-bar . Presented here is the final result for the D+ from the complete data set of 818 pb-1 and an updated result for the Ds+ from 400 pb-1 of the total data set of 600 pb-1 The final result is fD+=(205.8±8.5±2.5) MeV, and the preliminary value for the Ds+ is fDs+=(267.9±8.2±3.9) MeV, where both results are radiatively corrected. The recent most precise unquenched Lattice-QCD calculation for the D+ agree with this result but are in disagreement with the Ds+. Using almost identical analysis techniques the decay Ds+→pn-bar has been observed with a branching fraction B(Ds+→pn-bar )=(1.30±0.36-0.16+0.12)x10-3