using System;

using static System.Console;

​

int checkyear;

WriteLine("Do you want to guess a leap year?");

string playGame = ReadLine();

if (playGame == "yes")

    WriteLine("Type an year: ");

checkyear = int.Parse(ReadLine());

if ((((checkyear % 400) == 0) || ((checkyear % 100) == 0) || ((checkyear % 4) == 0)))

{

    WriteLine($"{checkyear} is a leap year");

}

else

    WriteLine($"{checkyear} is not a leap year");

WriteLine("Would you like to know when the next Leap year is?");

string findOutNext = ReadLine();

while ((findOutNext == "yes"))

{

    checkyear++;

    if ((((checkyear % 400) == 0) || ((checkyear % 100) == 0) || ((checkyear % 4) == 0)))

    {

        WriteLine($"{checkyear} is the next leap year");

        ReadLine();

    }

}

​

WriteLine("Do you want to guess again?");