[C#] (클래스추가)람다식을 사용하여 4칙연산 함수 구현

namespace Lambda_Cal
{
//계산기 클래스 - 람다식 사용
    class Calculator
    {
        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(double a, double b) => (double)a / b;
    }
    class Program
    {
  
        static void Main(string[] args)
        {
            Calculator cal = new Calculator();

            Console.WriteLine(cal.Plus(4, 5));
            Console.WriteLine(cal.Minus(4, 5));
            Console.WriteLine(cal.Multiple(4, 5));
            Console.WriteLine(cal.Divide(4, 5));
           

        }
    }
}