using System;

public class Program

{

    public static void Main()

    {

        int b;

        string poruka;

        Console.WriteLine("Unesi cetvorocifreni broj");

        int abcd = int.Parse(Console.ReadLine());

        b = (abcd % 1000) / 100;

        if (b == 4)

            poruka = ("cifra stotina sadrzi 4"); 

        else

            poruka = ("cifra stotina ne sadrzi 4");

        Console.WriteLine(poruka);

        Console.ReadLine();

    }

}

​