using System;

public class Program

{

    public static void Main()

    {

/*

Full Name: Joonho Cho

IU Username: jc103

Replit Username: samcho411

*/

        //Create variables to store the user inputs

        Console.WriteLine("Please enter the household income: ");

        int iincome;

        string strIncome = Console.ReadLine();

        //Print a message prompting the user to enter household income

        //Validation 1: Check Tuition Fees (1): int

        bool IsValidtuition = Int32.TryParse(strIncome, out iincome);

        if (IsValidtuition == false)

        {

            Console.WriteLine("Please enter integers");

            return;

        }

        //Validation 2: Check Tuition Fees (2): non-negative

        if (iincome < 0)

        {

            Console.WriteLine("Please enter a non-negative number");

            return;

        }

        //Print a message prompting the user to enter student type

        Console.WriteLine("Please enter student type:");

        string myStudentType = Console.ReadLine();

        myStudentType = myStudentType.Trim().ToUpper();

        //Validation 3: Check Student Type

        if(myStudentType != "U" && myStudentType != "G")

        {

            Console.WriteLine("Please enter either U or G");

            return;

        }

        //Print a message prompting the user to enter email

        //Validation 4: Check Email

        Console.WriteLine("Please enter email: ");

        string stremail = Console.ReadLine();

        if(stremail.Contains("@") == false)

        {

            Console.WriteLine("Please type a valid email");

            return;

        }

        //Print a message prompting the user to enter birthday

        //Strvar = "2019/10/06" 

        //StrMonta = strvar.substring (); 

        //[]strmonta = strvar.split(',')

        Console.WriteLine("Please enter Birthday(year/month/day): ");

        string strbday = Console.ReadLine();

        Console.WriteLine("===================================");

​

​

        //Nested If to calculate default loan

        //Calculate the loan amount

        //int iudefaultuloan = 30000;

        //int uloan = 20000;

        double dLoanamount = 0;

        if (myStudentType == "U")

        {

            if(iincome > 70000)

               dLoanamount = 20000;

            else 

                dLoanamount = 30000;

        }

        if (myStudentType == "G")

        {

            if(iincome > 90000)

                dLoanamount = 40000;

            else

                dLoanamount = 50000; 

        }

            Console.WriteLine("Loan Amount: $" + dLoanamount.ToString("C"));

        //split

        //convert.toint32

        //if (var%2 == 0) 

        //Calculate Extra Amount for Lucky draw

        string strBirthday = "";

        int iMonth = Convert.ToInt32(strbday.Substring(5,2));

        double dExtraAmount = 0;

    //Extra Loan Amount 

    if ((iMonth % 2) == 0)

      dExtraAmount += 2000;

​

    Console.WriteLine("Extra Loan Amount: $" + dExtraAmount.ToString("C"));

    //Print the outputs

​

​

        //Print the outputs

        //two string (currency)) ToString("C2")

    }

}