[C#]람다식을 이용하여 계산기 클래스 만들기

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp16
{
    class Program
    {
        class Calculrator //계산기 클래스 생성
        {
           

            public int Plus(int a,int b) => a + b;
            public int Minus(int a, int b) => a - b;
            public int Multiple(int a, int b) => a * b;
            public double Divide(int a, int b) => (double)a / b; //캐스팅
        }
        static void Main(string[] args)
        {
            Calculrator cal = new Calculrator();
           Console.WriteLine( cal.Plus(5, 4));
            Console.WriteLine(cal.Minus(5, 4));
            Console.WriteLine(cal.Multiple(5, 4));
            Console.WriteLine(cal.Divide(20, 5));

        }

          
    }

 }