0004-C++和OF基础-英文版.pdf

POLITECNICO DI MILANO CHALMERS Basics of C++ and OpenFOAM Tommaso Lucchini Department of Energy Politecnico di Milano Tommaso Lucchini/ Basics of C++ and OpenFOAM POLITECNICO DI MILANO CHALMERS Outline • Why C++? • How to learn C++ efficiently • Basics of C++ and examples of C++ implementation in OpenFOAM • Some C++ bibliography Tommaso Lucchini/ Basics of C++ and OpenFOAM POLITECNICO DI MILANO CHALMERS Why C++? • Programming language serves two related purposes: ◮ A Vehicle to specify actions to be executed. ◮ Provide a set of concepts for the programmer to use when thinking about what can be done. • For these reasons it has to be: ◮ Close to the machine to handle simply and efficiently its aspects. ◮ Close to the problem to be solved so that the concept of a solution can be expressed directly and concisely. • There is a very close connection between the language we think/program and the problems and solutions we can imagine. Tommaso Lucchini/ Basics of C++ and OpenFOAM POLITECNICO DI MILANO CHALMERS Learning C++ (1/2) • It is important to focus on the concepts and not get lost in language-technical details. • The purpose of learning a programming language is to become a better programmer: ◮ To become more effective at designing and implementing new system and at maintaining old ones. • Appreciating programming and design techniques is far more important than understanding details; that understanding will come with time and practice. • However, this takes time to people coming from different lang