01. Smallest of Three Numbers

using System;

namespace _01._Smallest_of_Three_Numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            double firstNumber = double.Parse(Console.ReadLine());
            double secondNumber = double.Parse(Console.ReadLine());
            double tirthNumber = double.Parse(Console.ReadLine());

            Console.WriteLine(FineSmallestNumber(firstNumber,secondNumber,tirthNumber));
        }

        static double FineSmallestNumber (double firstNumber, double secondNumber, double tirthNumber)
        {
            double smallest = double.MaxValue;
            if (firstNumber< smallest)
            {
                smallest = firstNumber;
            }
            if (secondNumber < smallest)
            {
                smallest = secondNumber;
            }
            if (tirthNumber < smallest)
            {
                smallest = tirthNumber;
            }
            return smallest;
        }
    }
}