该代码是在VC++6.0环境下，利用指针实现CString类中strcat、strcmp、strcpy三个函数功能的基础代码；代码利用了一个死循环，主要是为了方便用户检查各函数的功能，如不需要，可以删除。-The code is in the VC++6.0 environment, the use of pointer to achieve the CString class strcat, strcmp, strcpy three Function foundation code　code utilizes an infinite loop, mainly for the convenience of the user to check the function of each function, such as do not need to can be deleted.