C#函數（構造函數）的重載

using System;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            Cat cat = new Cat();//不含參數的構造方法
            Console.WriteLine("姓名是{0}，年齡是{1}",cat.name,cat.age);
            Cat cat1 = new Cat("一隻貓");//含1個參數的構造方法
            Console.WriteLine("姓名是{0}，年齡是{1}", cat1.name, cat1.age);
            Cat cat2 = new Cat("又一隻貓",18);//含2個參數的構造方法
            Console.WriteLine("姓名是{0}，年齡是{1}", cat2.name, cat2.age);
        }
        class Cat
        {
            public string name;
            public int age;
            public Cat() { }
            public Cat(string nameValue)
            {
                name = nameValue;
            }
            public Cat(string nameValue, int ageValue)
            {
                name = nameValue;
                age = ageValue;
            }
        }
    }
}

using System;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            int c = Calculate.Divide(7, 3);
            Console.WriteLine(c);
            double d = Calculate.Divide(7, 3.0);
            Console.WriteLine(d);
        }
        /// <summary>
        /// 方法名稱一樣 參數類型不一樣 構成重載
        /// </summary>
        class Calculate
        {
            public static int Divide(int a,int b) {
                return a / b;
            }
            public static double Divide(double a, double b)
            {
                return a / b;
            }
        }
    }
}