C# 一个简单的静态函数例子

 

具体代码如下：

        //主函数中调用静态函数
        static void Main(string[] args)
        {
            double a = 12345;
            double b = 67890;

            double sum = Calculate.Add(a, b);
            double dif = Calculate.Sub(a, b);
            double pro = Calculate.Multi(a, b);

            Console.WriteLine("a+b={0}", sum);
            Console.WriteLine("a-b={0}", dif);
            Console.WriteLine("a*b={0}", pro);

        }

        class Calculate
        {
            //函数：求和
            public static double Add(double x,double y)
            {
                return x + y;
            }

            //函数：求差
            public static double Sub(double x, double y)
            {
                return x - y;
            }

            //函数：求商
            public static double Multi(double x, double y)
            {
                return x * y;
            }
        }