提高软件健壮性的基本手段之一就是使用异常处理技术。

C++异常处理技术是一种面向对象的运行时错误处理机制，思路完全不同于C语言的返回值检查策略。这里主要讨论C++异常处理机制的构成及其使用策略，以及一些RTTI（Run-time Type Identification）的知识。-The basic means to improve the robustness of the software is to use exception handling techniques. Exception Handling in C++ is an object-oriented run-time error handling mechanism, completely different from the idea of ​ ​ the return value of C-check strategy. Here discuss the C++ exception handling mechanism and its use constitutes a strategy, and some RTTI (Run-time Type Identification) knowledge.