采用一种类似于凯撒密码加密方式对输入的一段文字进行加密，同时编写完成其对应得解密程序对加密后的密文进行解密恢复原始输入的原文。-Caesar uses a password encryption method is similar to the input section of text is encrypted, at the same time to complete its preparation of a corresponding encrypted decryption progra