using System;

public class Program

{

    public static void Main()

    {

    int num1, num2, num3, num4;

        Console.WriteLine("Enter older brother age");

        num1 = int.Parse(Console.ReadLine());

        num2 = num1 - 10;

        num3 = num2 + 1;

        num4 = num3 + 3;

        Console.Write("The youngest brothes is "); Console.Write(num2); Console.WriteLine(" years old.");

        Console.Write("The younger daugher is "); Console.Write(num3); Console.WriteLine(" years old");

        Console.Write("The older sister is "); Console.Write(num4); Console.WriteLine(" years old");

    }

}

​