SnakeTable

说明：本程序可产生蛇形阵，同时能识别输入字符，满足了题目要求，同时还有以下特性：

一：在输入字符数超过2（如输入10或者ak）的情况下提示“ERROR!!! You have enter two or more chars!”

二：加入了对齐功能





Mybirthday

说明；本程序定义了一个MyDate的类，可实现题目的所有功能并加入了一些特性：

一：所有数据均可由用户输入（不输入的情况全部默认为0）

二：具备一定的检查输入的特性

Tip：由于默认值为0 ，因此比较年龄的时候会检查是否定义过这个ID-SnakeTable Descr iption: This program can produce serpentine front, and can recognize the input character to meet the requirements of the subject, along with the following characteristics: a: Enter the number of characters in the case of more than two (eg enter 10 or ak) prompt " ERROR! !!! You have enter two or more chars " two: adding the alignment features Mybirthday descr iption　This program defines a class MyDate, enabling all the features of the subject and added some features: a: All data can be input by the user ( Without the input of all the default is 0) two: Check the input with a certain characteristic Tip: Since the default value is 0, so when comparing age checks whether the defined ID