1.支持的运算类型有:+(加) -(减) *(乘) /(除并求余) (求余).

2.支持正负数的运算.

3.支持大数阶乘.

4.由于运用了vector类，原则上支持任意大的整数运算.-1. To support the types of operations are:+ (plus)- (by)* (x)/(in addition to, and seeking more than)　(for more). 2. In support of plus or minus the number of operations. 3. To support the factorial of large numbers. 4. category as a result of the use of a vector, in principle, support any large integer calculations.