using System;

public class Program

{ 

    static void Main()

    {

        Console.WriteLine("Enter integer number:");

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

        int tmpNumber = number / 100;

        bool isSeven = tmpNumber % 10 == 7;

        Console.WriteLine("Is third digit = 7 => {0}" , isSeven);

    }   

}