设计一个可进行多项式运算的演示程序。程序执行的命令包括：（1）生成多项式。（2）打印多项式（积分的打印做特殊情况处理）3）两个多项式求和。（4）两个多项式求差。（5）对多项式求积分。（6）对多项式求微分-design can be a polynomial of Operational Demonstration Program. Procedures for the implementation of the order, including : (a) generating polynomial. (2) Print polynomial (Integral Print doing special circumstances) 3) 2 polynomial summation. (4) two polynomials for worse. (5) The right polynomial quadratures. (6) for polynomial differential pairs