#include "stdafx.h"

#include "Windows.h"

#include "stdio.h"

 

using namespace System;

 

String^ intToCommonDay( int x )

{

        switch( x )

        {

        case 0: return "Sunday";

        case 1: return "Monday";

        case 2: return "Tuesday";

        case 3: return "Wednesday";

        case 4: return "Thursday";

        case 5: return "Friday";

        case 6: return "Saturday";

        default: return "N/A";

        }

}

 

int commonDayToInt( String^ x )

{

        //have to use this b/c cannot use switch with char array in C++

        //too lazy to use public enum so use if/then

        x = x->ToLower();

        if(x == "january")

                return 1;

        else if(x == "february")

                return 2;

        else if(x == "march")

                return 3;

        else if(x == "april")

                return 4;

        else if(x == "may")

                return 5;

        else if(x == "june")

                return 6;

        else if(x == "july")

                return 7;

        else if(x == "august")

                return 8;

        else if(x == "september")

                return 9;

        else if(x == "october")

                return 10;

        else if(x == "november")

                return 11;

        else if(x == "december")

                return 12;

        else return 0;

}

 

int main(array<System::String ^> ^args)

{

        SetConsoleTitle(L"Date Project");

 

    Console::WriteLine(L"Please enter a date. The program will find the day it is held on.\n\nValid Synax:\n\t*\t3/15/2012\n\t*\tMarch 15, 2012\n");

       

        //get date + convert to numbers.

        String^ date = Console::ReadLine();

        array<String^>^ parsed;

 

        if(date->Contains("/"))

                parsed = date->Split('/';

        else if(date->Contains(","))

        {

                array<String^>^ da = date->Split(',';

                array<String^>^ db = da[0]->Split(' ';

                parsed = gcnew array<String^>(3);

                parsed[0] = Convert::ToString(commonDayToInt(db[0]));

                parsed[1] = db[1];

                parsed[2] = da[1]->Substring(1); //for the space ' '

        }

        else

        {

                Console::WriteLine(L"You have entered an invalid syntax.\nPress any key to quit.");

                Console::ReadKey();

                return 0;

        }

        int month = Convert::ToInt32(parsed[0]);

        int day = Convert::ToInt32(parsed[1]);

        int year = Convert::ToInt32(parsed[2]);

 

        //do calculations

        int a = (14-month)/12;

        int y = year - a;

        int m = month + (12*a) - 2;

        int d = (day + y + y/4 - y/100 + y/400 + (31*m)/12) % 7;

 

        //finish

        Console::WriteLine(L"The day of the month is: " + intToCommonDay(d) );

 

        //wait for user end

        Console::ReadKey();

    return 0;

}