a C# Program ,Calculator by Making Simple And Easiest methods

INPUT:

class calculator

    {

        double  sum(double n1, double  n2)

        {

            return n1 + n2;

        }

        double  subtract(double n1, double  n2)

        {

            return n1 - n2;

        }

        double multiply(double  n1, double n2)

        {

            return n1 * n2;

        }

        double division(double  n1, double n2)

        {

            return n1 / n2;

        }

        static void Main(string[] args)

        {

            calculator c = new calculator();

            double input1, input2;

            Console.WriteLine("enter first no");

            input1 = Convert.ToDouble(Console.ReadLine());

            Console.WriteLine("enter second no");

            input2 = Convert.ToDouble(Console.ReadLine());

            double x = c.sum(input1, input2);

            double y = c.multiply(input1, input2);

            double z = c.division(input1, input2);

            double w = c.subtract(input1, input2);

               Console.WriteLine("subtraction {0}",w);

               Console.WriteLine("sum {0}", x);

               Console.WriteLine("multiply {0}", y);

               Console.WriteLine("division {0}", z);

        }  

    }

}

OUTPUT: