using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        double max_number = 0;

        double current_number;

        Console.WriteLine("Zadejte 10 čísel");

        for (int i = 0; i < 10; i++)

        {

            Console.WriteLine("Zadej {0}.číslo:", i + 1);

            current_number = Double.Parse(Console.ReadLine());

            if ((current_number % 7 == 0 && current_number != 0) & current_number > max_number)

            {

                max_number = current_number;

            }

        }

​

        Console.WriteLine("Nejvyšší číslo dělitelné 7 je: {0}", max_number);

    }

}