Math operations

using System;

class Program
{
    public static void Main(string[] args)
    {
        double one = double.Parse(Console.ReadLine());
        char ch = char.Parse(Console.ReadLine());
        double two = double.Parse(Console.ReadLine());
        Console.WriteLine(Mathoperations(one,ch,two));
    }
    public static double Mathoperations(double a,char ch,double b)
    {
        double result = 0.00;
        switch(ch)
        {
            case '+':
                result = a + b;
                break;
            case '-':
                result = a - b;
                break;
            case '*':
                result = a * b;
                break;
            case '/':
                result = a / b;
                break;
        }
        return result;
    }
}