QingTC

using System; namespace test { class Program { static void Main(string[] args) { for (int i = 1; i <= 255; i++) { char c = (char)i;//通过强制类型转换来将...

using System; namespace test { class Program { static void Main(string[] args) { float a = float.Parse(Console.ReadLine()); float cir = 2 * a * 3.1415f...