用C语言实现两个一元多项式的乘积，输入数据为两行，分别表示两个一元多项式，每个一元多项式以指数递增的顺序输入多项式各项的系数、指数。最后以指数递增的形式输出乘积。-C language with two unary polynomial of the product, the input data for the two lines, respectively, two unary polynomials, each one dollar increase in the order of pol