C# -- 接口 (關鍵字:interface)

C#: 接口(關鍵字:interface)

1.代碼(入門舉例)

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("-------------------------------------");
            IIntroduce iSE = new SoftwareEngineer();
            iSE.SayHi();
            iSE.DescribeMyself();
            iSE.SayGoodbye();


            Console.WriteLine("-------------------------------------");
            IIntroduce iTc = new Teacher();
            iTc.SayHi();
            iTc.DescribeMyself();
            iTc.SayGoodbye();

            Console.ReadKey();
        }
    }

    interface IIntroduce
    {
        void SayHi();
        void DescribeMyself();
        void SayGoodbye();

    }

   class SoftwareEngineer : IIntroduce
    {
        public void DescribeMyself()
        {
            Console.WriteLine("I'm a software engineer !"); 
        }

        public void SayGoodbye()
        {
            Console.WriteLine("Goodbye !");
        }

        public void SayHi()
        {
            Console.WriteLine("Hi !");
        }

    }


   class Teacher : IIntroduce
    {
        public void DescribeMyself()
        {
            Console.WriteLine("I'm a Teacher !");
        }
        public void SayGoodbye()
        {
            Console.WriteLine("Goodbye !");
        }
        public void SayHi()
        {
            Console.WriteLine("Hi !");
        }
    }

2. 運行結果：