C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 接口_隐式接口实现
{
    // 定义接口1 : IChineseGreeting
    interface IChineseGreeting
    {
        void SayHello();
    }

    // 定义接口2 : IAmericanGreeting
    interface IAmericanGreeting
    {
        void SayHello();
    }

    // Speaker类实现两个接口: IChineseGreeting, IAmericanGreeting
    public class Speaker : IChineseGreeting, IAmericanGreeting
    {
        // 隐式接口实现
        public void SayHello()
        {
            Console.WriteLine("你好!");
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            // 实例化Speaker
            Speaker speaker = new Speaker();

            // 调用中国人打招呼方式
            IChineseGreeting iChineseG = (IChineseGreeting)speaker;
            iChineseG.SayHello();

            // 调用美国人打招呼方式
            IAmericanGreeting iAmericanG = (IAmericanGreeting)speaker;
            iAmericanG.SayHello();

            /*------------------------------------------------------------------------------------------------------------
             * 1. 最终的输出结果: 两个 "你好"
             * 2. iChineseG/iAmericanG 调用了相同的SayHello()方法
            ------------------------------------------------------------------------------------------------------------*/

            Console.ReadLine();
        }
    }
}