一元多项式的计算,建立两个多项式，并进行相加，相减运算，输出结果.参考资料：严蔚敏《数据结构与算法-one yuan polynomial calculations, the establishment of two polynomials, and together, subtract operation, the output results. References : Yan Wei Min "Data Structures and Algorithms

清华大学严蔚敏数据结构习题集（C版）答案-Qinghua University, Yan Wei-min data structure Exercises Set (C version) answers