这个简单的计算器能提供基本的加、减、乘、除四则运算，同时它还能识别为0的除数。还可支持12.365e+654的大数运算。-This simple calculator will provide the basic add, subtract, multiply, with the exception of four operations at the same time it can identify the divisor is 0. Can support large numbers of

本代码能够切实有效的实现大数的四则运算，敬请下载。-This code can be effective to achieve large numbers of four operations, please download.

C++开发的大数类，支持超过int64位的大数的四则运算-bignumber class