using
 System;

using
 System.Collections.Generic;

using
 System.Linq;

using
 System.Text;

namespace
 ConsoleApplication1

{
classProgram

    {
staticvoid Main(string[] args)

{
int years;

int months;

int days;

Console.WriteLine("inserd date in this formad dd/mm/yyyy: ");

Console.WriteLine("Days: ");

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

Console.WriteLine("Months: ");

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

Console.WriteLine("Years: ");

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

if (years < 9999 && years > 0 && months > 1 && months < 12 && days > 1 && days < 31)

Console.WriteLine("date inserted correctly");

else

                 
Console.WriteLine("date inserted incorrect");

}
}
}