摘要: [toc] 1.Numeric type (1)integer Use Is to show people's age;phone number ;id numbers etc. Define How to use plus minus,multiply,divide or some logical 阅读全文
posted @ 2019-08-26 16:06 是我,米老鼠 阅读(147) 评论(0) 推荐(0) 编辑