using System; namespace CalculatorApplication { class NumberManipulator { public int FindMax(int num1, int num2) { /* 局部变量声明 */ int result; if (num1 > num2) result = num1; else result = num2; return result; } static void Main(string[] args) { /* 局部变量定义 */ int a = 100; int b = 200; int ret; NumberManipulator n = new NumberManipulator(); //调用 FindMax 方法 ret = n.FindMax(a, b); Console.WriteLine("最大值是： {0}", ret ); Console.ReadLine(); } } }