These cours will present the new technics (expression templates,meta-programs) in C++ and their applications. We will also recall the syntax of the langage and more classical concepts such templates and the STL (Standard Template Library).

In an other part, we will present several tools for object design (design patterns,UML) and their applications to the finite element method for some equations such that Stokes, Navier-Stokes, Lamé et Helmoltz. These ideas are illustred in the didactic softs TnFEM (Template and Finite Element Method) and OFELI (Object Finite Element LIbrary).

In the continuity of the last CEMRACS edition, we will present an application of these methods to the automatic differentiation for optimal shape design and optimal control. We will also describe several tools for parallel computing.