操作系统中用C++实现银行家算法，实现安全性算法。可以判断这个系统资源是否足够与是否可以进程申请资源后系统是否安全。-The operating system using C++ realization of banker' s algorithm to achieve security algorithms. The system can determine the adequacy of resources and the possibility of the application process, the resources of the system is safe.