一个C++类，可以添加

代码说明：

一个可以对任意长整数进行加减的类 在Visual C++6.0 WinXp下编译通过采用类来实现,从CString继承而来数据运算的结果保存在CString类中理论上可对任意长的数据进行相加在Release目录下有可执行文件，将*.txt拖放到longadd.exe上即可，*.txt为数据文件。-A C++ class which can do the Add-Substract operation to integer with arbitrary length.Compiled with VC++ 6.0 under Windows XP.The class inherited from CString and theoretically it can do add-substract to any length integer.There is a executive file under Release directory,drag the*.txt data file on to the longadd.exe,then it s ok!