说明：  最近在研究贝叶斯网络，上传一个C++的贝叶斯网络构建、学习和推理代码，可用，有样例图，大家一起学习
(A recent study of Bayesian networks, upload a C++ of Bayesian network construction, learning and reasoning of code that can be used, the sample diagram, we will study together)