摘要:
Console.WriteLine("请输入你的qq邮箱"); string yx = Console.ReadLine(); int a = yx.LastIndexOf("qq"); int b = yx.LastIndexOf("@"); if ((a - b) == 1) { Console 阅读全文
摘要:
Console.WriteLine("请输入你的身份证号码:"); string a = Console.ReadLine(); string year = a.Substring(6, 4); string month = a.Substring(10, 2); string day = a.Su 阅读全文