杭电1002题 A+B Problem 2，做了挺久才做出来的，主要原理是用字符串数组来记录超长数字，再用加法原理进行计算就ok。-Hang Power 1002 title A+ B Problem 2, made out quite long to do, the main principle is to record the long string array of numbers, then the calculation of addition to ok.