Two or more interfaces can be combined into a single interface and implemented in a class

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

namespace ConsoleApplication1
{
    class Program
    {
        interface inter
        {
            void show();
        }
        interface inter1
        {
            void display();
        }
        interface combineinter : inter, inter1
        {
            //Above interface combined
        }
      
        class multipleinterimp : combineinter
        {
            public void show()
            {
                System.Console.WriteLine("show() method implemented");
                System.Console.ReadLine();
            }
             public void display()
        {
            System.Console.WriteLine("Display() method implemented");
            System.Console.Read();
        }
            static void Main(string[] args)
            {
                multipleinterimp interp = new multipleinterimp();
                interp.show();
                interp.display();
            }
        }
    }
}