按照屏幕的提示，我们可以从键盘输入指数和系数，两个多项式的输入结束是以两个连续的０为标志．本程序可以实现两个多项式的加法-accordance with the instructions on your screen, we can input from the keyboard and index coefficient, the importation of two polynomials is the end of two consecutive 0 mark. This program can achieve two polynomials Adder