重载和重写的区别

class Program
    {
        static void Main(string[] args)
        {
            int a = MyMath.Add(12, 36);
            Console.WriteLine("整数相加结果:{0}",a);

            float b = MyMath.Add(12, 36.36f);
            Console.WriteLine("浮点数相加结果:{0}",b);

            float ff = MyMath.Add(36.36f, 23);
            Console.WriteLine("浮点数和整数相加结果是:{0}",ff);

            double d = MyMath.Add(42.52, 23);
            Console.WriteLine("双精浮点数和整数相加结果是:{0}",d);

        }
    }

class MyMath
    {

        public static int Add(int a, int b)
        {
            return a + b;
        }

        public static float Add(float a, float f)
        {
            return a + f;
        }

        public static double Add(double a, double f)
        {
            return a + f;
        }

        public static decimal Add(decimal a, decimal f)
        {
            return a + f;
        }

        //参数的类型相同，但顺序不同,构成重载。
        public static float Add(int a, float f)
        {
            return a + f;
        }

        public static float Add(float f, int a)
        {
            return a + f;
        }
       //参数的类型相同，个数不同,,构成重载
       public static int Add(int a)
        {
            return a;
        }

    }