左正

摘要： class Program { static void Main(string[] args) { double v1 = 123; double p1 = v1.zzzzz(); System.Console.WriteLine(p1); //-- double p2=(1234567890.123).zzzzz(); System.Console.WriteLine(p2); } } static class myExtension { public static double zzzzz(this double d) { return d/2 ; } } 阅读全文