using System; namespace ArrayApplication { class ParamArray { public int AddElements(params int[] arr) { int sum = 0; foreach (int i in arr) { sum += i; } return sum; } } class TestClass { static void Main(string[] args) { ParamArray app = new ParamArray(); int sum = app.AddElements(512, 720, 250, 567, 889); Console.WriteLine("总和是： {0}", sum); Console.ReadKey(); } } }