Appointments calendar Passover project, April 2004

Appoint.c

/*                         A P P O I N T M E N T
					  A Schedule program written in C
						Passover 2004                       */

#include <stdio.h> //Basic header file
#include <conio.h> //Basic header file
#include <dos.h> //Mouse, sound, etc. header file
#include <stdlib.h> //Supplemental services (exit(), etc.)
#include <alloc.h> //Memory allocation services
#include <time.h> //Timing and dates header file
#include <string.h> //Dealing with strings
#include <ctype.h> //Dealing with keyboard strokes

/* Defines (constants) */
//Date and time constants
#define Month "April" //The month we're working on
#define Year 2004 //The year we're working on
#define MaxDays 31 //Maximum number of days in [Month]
#define MinGap 30 //The minimum gap required between meetings
#define DaysInWeek 7 //Fixed value of the amount of days in a week
#define HolyDay 7 //The frequency in which comes a holy day (every X days)
#define MaxFreeText 100 //Maximum limitation of the Details string
#define StartWork 9 //The hour in which the workday starts
#define EndWork 17 //The hour in which the workday ends

//Colors
#define HotKeyColor YELLOW //The color used for bolding a hotkey

//ASCII characters
#define BackChar 176 //The '°' character

//Calendar Drawing
#define CalendarX 15 //The horzional coordinate at which the drawing begins
#define CalendarY 5  //The vertical coordinate at which the drawing begins
#define DayWidth 7 //How wide is a day cell
#define DayHeight 3 //How tall is a day cell

/* Global/Scope-wide variables */
int xMouse, yMouse; //X and Y coordinates of the mouse

//The area in where each day is, in the visual calendar, to compare with input
int XCoorCalendar[MaxDays]={0};
int YCoorCalendar[MaxDays]={0};

typedef struct Meida //Global record, contains two wide strings to hold each
{                    //meeting's details, such as place or person to meet
	char Person[MaxFreeText]; //The person who is going to be met
	char Details[MaxFreeText]; //Some more info the user want to supply
} Meida;

typedef struct Pgisha //Global record, contains the exact details of each meet
{
	short int Hour; //The hour of the meeting (0-23)
	short int Min; //The minutes (0-59)
	struct Meida *MoreInfo;  //Points to the MoreInfo record
	struct Pgisha *Next; //Points to the next record (the next meeting)
	struct Pgisha *Prev; //Points to the previous record (the prev. meeting)
} Pgisha;

typedef struct Date //Global record, contains each and every day's meetings
{
	short int Day; //The day in the month [0-MaxDays]
	struct Pgisha *Meeting; //Points to the first meeting in that day
	struct Date *Next; //Points to the next record (the next day)
	struct Date *Prev; //Points to the previous record (the previous day)
} Date;

/* Functions */
//User-Interface Functions
void WelcomeScreen();
void FillScreen(char, short int, short int);
void InitScreen();
void DrawBorder(short int, short int, short int, short int, short int);
void CastShadow(short int, short int, short int, short int, char);
void DrawCalendar();
void Center(char[80], short int);
void HotPrint(char[80], char);
void Schedule();
void AddMeeting();
Pgisha *GetAttributes(int);
int ConfirmDetails(int, int, Pgisha *, char);
void UpdateMeeting();
void EraseMeeting();
void PrintMeeting();
void PrintMeetingInDay(short int);
void PrintByRange(int, int, int, int);
int ExtractDayFromCalendar();
void QuitScreen();
//Date, Time and Meetings Handling Functions
int NumMeetings(short int);
Date *FindDay(int);
Date *FindLast(Date *, Date *);
Pgisha *LastMeeting(int);
void AddTimeGap(int *, int *);
void SubstractTimeGap(int *, int *);
int ValidTime(int, int, int);
int CompareTime(int, int, int, int);
void DateSort(Date *);
void MeetingSort(Date *, Pgisha *);
Pgisha *FindMeetingByName(char[]);
void EraseByRange(int, int, int, int);
void EraseByDay(short int);
void Erase (Pgisha *);
//Dynamic-Memory Managment Functions
Date *AllocateDate();
Pgisha *AllocatePgisha();
Meida *AllocateMeida();
void Free();
//Mouse Functions
void InitMouse();
int MouseButton();
void ShowMouse();
void HideMouse();
int whereMouseX();
int whereMouseY();

Date *Head=NULL; //The head pointer

/* Main Subroutine */
void main()
{
	InitMouse();
	InitScreen();
	WelcomeScreen();
	Schedule();
	Free();
	QuitScreen();
}

void WelcomeScreen()
{
	HideMouse();
	FillScreen(BackChar,BLUE,CYAN);
	_setcursortype(_NOCURSOR);
	textcolor(CYAN);
	textbackground(BLUE);
	DrawBorder(2,1,8,80,18);
	window(2,8,80,18);
	cprintf("¹ Welcome to Ben Bekerman's ּ\r\n");
	textcolor(MAGENTA);
	cprintf("    .,.                         .'         '                            '     \r\n\
   .J53.                        ,(        ,#                           *A     \r\n\
   !@*@!   %!$3(. J(3$=' .7$$7* *J ¦3C$$!.%M$,*J=$J¦C$C. ,7$$7' (3C$$*'AW$'   \r\n\
  .5= =5.  ©=..J$ #3'.(#.#%..¦@,¦5 7@*.*M *׀. (׀!.$#,.57'#(..=#.J#,.¦׀ ¦#.    \r\n\
  (׀JJJ@=  ©   ,׀ #¦   M.©.   5(¦5 7%  .M ,׀  (5  C3  $7*M$$$$A.J3  ,׀ !#     \r\n\
 '׀¦,,,¦@' ©(..C\% #J'.¦#.#C..!@*¦5 7\%  .M ,׀. (5  C3  $7'@('.*=.J3  ,׀ !#.    \r\n\
 ((     (( ©(3J7. #CJ3C, 'C33C! *C ¦7  .% .33,*C  ¦=  7¦ *J333, (=  '$ '$3'   \r\n\
\ \ \ \ \ \ \ \ \ \ \ W ..   A!..     ..    .      .  ..  .           ...       .  ..    \r\n\
\ \ \ \ \ \ \ \ \ \ \ !      *.                                                          \r\n");
	window(1,1,80,25);
	textcolor(CYAN);
	Center("¹ A P P O I N T M E N T ּ",18);
	textcolor(WHITE);
	Center("  Schedule Program for the Month of  ",21);
	Center(Month,22);
	textcolor(BLUE);
	textbackground(CYAN);
	Center("Press any key or click a mouse button to continue...",25);
	ShowMouse();
	//OpeningSound();
	while(!kbhit() && !MouseButton())  //Waits until the user pressed a key
	;								   //or clicked a mouse button
	if(kbhit())
		getch();
}

void InitScreen()
{
	textmode(C80); //Forces color, 80x25 screen
	window(1,1,80,25);
	textcolor(LIGHTGRAY);
	textbackground(BLACK);
	clrscr();
}

void FillScreen(char Chr, short int ForeColor, short int BackColor)
{
	int i;

	clrscr();
	textcolor(ForeColor);
	textbackground(BackColor);
	for(i=1;i<=80*25;i++)
		cprintf("%c",Chr);
	insline();
	Center("APPOINTMENT  by Ben Bekerman,           ",25);
	gotoxy(wherex()-10,wherey());
	cprintf("%s %d",Month,Year);
}

void QuitScreen()
{
	HideMouse();
	InitScreen();
	_setcursortype(_NORMALCURSOR);
	window(1,1,80,25);
	cprintf("Thank you for using \"Appointment\".\r\n\n");
}

void DrawCalendar()
{
	struct text_info ti;
	short int temp,temp2;
	short int WeeksInMonth; //Fixed value of the amount of weeks in [Month]
	short int TheDay=1;
	int Pgishot;

	#if((MaxDays%DaysInWeek)!=0)
		WeeksInMonth=(MaxDays/DaysInWeek)+
					 (MaxDays/DaysInWeek)%(MaxDays%DaysInWeek);
	#else
		WeeksInMonth=MaxDays/DaysInWeek;
	#endif

	HideMouse();
	gettextinfo(&ti); //Store the current screen attributes in a structure,
					  //so we can extract from there the previous colors

	textbackground(BLUE);

	//Writing the names of the days
	#if(DaysInWeek==7 && DayWidth==7)
		textcolor(LIGHTMAGENTA);
		gotoxy(CalendarX+2,CalendarY+1);
		cprintf("Sun    Mon    Tue    Wed    Thu    Fri    Sat");
	#endif

	//Drawing the skeleton of the calendar
	textcolor(CYAN);

	gotoxy(CalendarX,CalendarY);
	cprintf("");
	for(temp=CalendarX+1;temp<CalendarX+DayWidth*DaysInWeek;temp++)
		cprintf("ִ");
	cprintf("¿");
	for(temp=CalendarX+DayWidth;temp<CalendarX+DayWidth*DaysInWeek;temp+=DaysInWeek)
	{
		gotoxy(temp,CalendarY);
		cprintf("ֲ");
	}

	for(temp=CalendarY+1;temp<=CalendarY+WeeksInMonth*DayHeight+1;temp++)
		for(temp2=CalendarX;temp2<=CalendarX+DayWidth*DaysInWeek;temp2+=DaysInWeek)
		{
			gotoxy(temp2,temp);
			cprintf("³");
		}

	for(temp=CalendarY+2;temp<=CalendarY+2+WeeksInMonth*DayHeight;temp+=DayHeight)
		for(temp2=CalendarX+1;temp2<CalendarX+DayWidth*DaysInWeek;temp2++)
		{
			gotoxy(temp2,temp);
			cprintf("ִ");
		}
	for(temp=CalendarY+2;temp<=CalendarY+1+WeeksInMonth*DayHeight;temp+=DayHeight)
	{
		gotoxy(CalendarX,temp);
		cprintf("ֳ");
		for(temp2=CalendarX+DayWidth;temp2<CalendarX+DayWidth*DaysInWeek;temp2+=DayWidth)
		{
			gotoxy(temp2,temp);
			cprintf("ֵ");
		}
		gotoxy(CalendarX+DayWidth*DaysInWeek,temp);
		cprintf("´");
	}

	gotoxy(CalendarX,CalendarY+WeeksInMonth*DayHeight+2);
	cprintf("ְ");
	for(temp2=CalendarX+DayWidth;temp2<CalendarX+DayWidth*DaysInWeek;temp2+=DayWidth)
	{
		gotoxy(temp2,CalendarY+WeeksInMonth*DayHeight+2);
		cprintf("ֱ");
	}
	gotoxy(CalendarX+DayWidth*DaysInWeek,CalendarY+WeeksInMonth*DayHeight+2);
	cprintf("");

	//Writing the days (1, 2, 3...)
	textcolor(LIGHTCYAN);
	for(temp=CalendarY+DayHeight;temp<CalendarY+1+WeeksInMonth*DayHeight;temp+=DayHeight)
		for(temp2=CalendarX+(DayWidth/2);temp2<CalendarX+DayWidth*DaysInWeek && TheDay<=MaxDays;temp2+=DayWidth)
		{
			gotoxy(temp2,temp);
			cprintf("%d",TheDay);
			TheDay++;
		}

	//Writing the vacancy
	TheDay=1;
	for(temp=CalendarY+1+DayHeight;temp<=CalendarY+1+WeeksInMonth*DayHeight;temp+=DayHeight)
		for(temp2=CalendarX+1;temp2<CalendarX+DayWidth*DaysInWeek && TheDay<=MaxDays;temp2+=DayWidth)
		{
			gotoxy(temp2,temp);
			XCoorCalendar[TheDay-1]=temp2;
			YCoorCalendar[TheDay-1]=temp-1;
			if(TheDay % HolyDay ==0)
			{
				textcolor(LIGHTRED);
				cprintf("------");
			}
			else
			{
				Pgishot=NumMeetings(TheDay);
				if(Pgishot==0)
				{
					textcolor(LIGHTGREEN);
					cprintf("Vacant");
				}
				else
					if(Pgishot!=(EndWork-StartWork)*(60/MinGap))
					{
						textcolor(YELLOW);
						cprintf("(%d)",NumMeetings(TheDay));
					}
					else
					{
						textcolor(LIGHTRED);
						cprintf(" Full ");
					}
			}
			TheDay++;
		}

	CastShadow(CalendarY,CalendarX,CalendarX+DayWidth*DaysInWeek,CalendarY+2+WeeksInMonth*DayHeight,' ');

	textattr(ti.attribute); //Restore the previous colors
	ShowMouse();
}

void DrawBorder
(short int BorderType,
short int xTop, short int yTop, short int xBot, short int yBot)
/*  Sub: DrawBorder
	Purpose: Drawing a border, creating a frame

	In:  BorderType	 - Line's type (whatever ³ (1-Single) or ÷ (2-Double)
		 xTop & yTop - Coordinates of the left-topmost spot of the border
		 xBot & yBot - Coordinates of the right-bottommost spot of the border
	Out: Nothing	                                                      */
{
	int count;

	if (BorderType==1)
	{
		gotoxy(xTop, yTop);
		cprintf("");

		for (count=1; count<(xBot-xTop); count++)
		{
			gotoxy(xTop+count,yTop);
			cprintf("ִ");
		}

		gotoxy(xBot,yTop);
		cprintf("¿");

		for (count=1; count<(yBot-yTop); count++)
		{
			gotoxy(xTop,yTop+count);
			cprintf("³");
		}

		gotoxy(xTop,yBot);
		cprintf("ְ");

		for (count=1; count<(xBot-xTop); count++)
		{
			gotoxy(xTop+count,yBot);
			cprintf("ִ");
		}

		for (count=1; count<(yBot-yTop); count++)
		{
			gotoxy(xBot,yTop+count);
			cprintf("³");
		}

		gotoxy(xBot,yBot);
		cprintf("");

	} else //Other board type
	{
		gotoxy(xTop, yTop);
		cprintf("ֹ");

		for(count=1; count<(xBot-xTop); count++)
		{
			gotoxy(xTop+count,yTop);
			cprintf("ֽ");
		}

		gotoxy(xBot,yTop);
		cprintf("»");

		for (count=1; count<(yBot-yTop); count++)
		{
			gotoxy(xTop,yTop+count);
			cprintf("÷");
		}

		gotoxy(xTop,yBot);
		cprintf("ָ");

		for (count=1; count<(xBot-xTop); count++)
		{
			gotoxy(xTop+count,yBot);
			cprintf("ֽ");
		}

		for (count=1; count<(yBot-yTop); count++)
		{
			gotoxy(xBot,yTop+count);
			cprintf("÷");
		}

		gotoxy(xBot,yBot);
		cprintf("¼");
	}
}

void CastShadow
(short int top,
short int left, short int right, short int bottom, char Background)
{
	struct text_info ti;

	gettextinfo(&ti); //Store the current screen attributes in a structure,
					  //so we can extract from there the previous textcolor

	textcolor(LIGHTGRAY);
	textbackground(BLACK);
	while(top++<bottom)
	{
		gotoxy(right+1,top);
		cprintf("%c",Background);
	}
	gotoxy(left+1,bottom+1);
	while(left<right+1)
	{
		cprintf("%c",Background);
		left++;
	}
	textattr(ti.attribute);
}

void Center(char Text[80], short int Coloum)
/* Centers the given text on the screen */
{
	struct text_info ti;

	gettextinfo(&ti); //Get the left and the right coordinates of the current
					  //text window

	gotoxy(((ti.winright-ti.winleft+1)-strlen(Text))/2, Coloum);
	cprintf(Text);
}

void HotPrint(char Text[80], char HotKey)
{
	char *Pntr;
	struct text_info ti;

	gettextinfo(&ti); //Store the current screen attributes in a structure,
					  //so we can extract from there the previous textcolor

	cprintf("%s",Text);
	Pntr=strchr(Text,HotKey);
	if(Pntr!=NULL)
	{
		gotoxy(wherex()-strlen(Text)+(Pntr-Text),wherey());
		textcolor(HotKeyColor);
		cprintf("%c",HotKey);
		textattr(ti.attribute);
	}
}

void DateSort(Date *p)
{
	Date *Temp=Head;

	while(Temp!=NULL && Temp->Day <= p->Day)
		Temp=Temp->Next;
	if(Temp!=NULL) //"Temp" points to a day "bigger" than p; Temp->Day >p->Day
	{
		if((Temp->Prev)!=NULL)
			(Temp->Prev)->Next=p; //Update the prev. entry as well
		else
			Head=p;
		p->Prev=Temp->Prev;
		Temp->Prev=p;
		p->Next=Temp;
	}
	else
	{
		Temp=FindLast(Head,Temp); //Find the one before "NULL"
		if(Temp==NULL) //"*p" should be the first
		{
			Temp=Head;
			p->Next=Temp;
			Head=p;
			Temp->Prev=p;
		}
		else //"*p" should be the last structure
		{
			Temp->Next=p;
			p->Prev=Temp;
		}
	}
}

void MeetingSort(Date *Yom, Pgisha *p)
{
	Pgisha *Temp;
	int a=-1;

	Temp=Yom->Meeting; //The first meeting in that day
	while((Temp!=NULL) && (a <= 0))
	{
		a=CompareTime(Temp->Hour, Temp->Min,
					  p->Hour, p->Min);
		Temp=Temp->Next;
	}

	Temp=Temp->Prev; //Remove the advancing made by the last iteration of "while"
	if(Temp!=NULL) //"*Temp" is a meeting being later than "*p"; (*Temp) > (*p)
	{   //"*p" should be before this meeting
		if((Temp->Prev)!=NULL)
			(Temp->Prev)->Next=p; //Update the prev. entry as well
		else
				Yom->Meeting=p;
		p->Prev=Temp->Prev;
		Temp->Prev=p;
		p->Next=Temp;
	}
	else
	{
		Temp=LastMeeting(Yom->Day);
		if(CompareTime(Temp->Hour, Temp->Min, p->Hour, p->Min)>=0)
		{ //"*p" should be the first structure
			Temp=Yom->Meeting;
			p->Next=Temp;
			Yom->Meeting=p;
			Temp->Prev=p;
		}
		else
		{
			Temp->Next=p;
			p->Prev=Temp;
		}
	}
}

Date *FindLast(Date *Pnt, Date *EndSearch)
{
	while(Pnt->Next!=EndSearch && Pnt!=NULL)
		Pnt=Pnt->Next;
	return (Pnt);
}


Date *FindDay(int TheDay)
{
	Date *p=Head;

	while(p!=NULL && p->Day < TheDay)
		p=p->Next;
	if(p!=NULL && p->Day==TheDay)
		return (p);
	return (NULL);
}

Pgisha *FindMeeting(int yom, int meetH, int meetM)
{
	Date *pDate;
	Pgisha *Pntr;

	pDate=FindDay(yom);
	if(pDate==NULL)
		return (NULL);   //NULL
	Pntr=pDate->Meeting; //not NULL
	while(Pntr!=NULL && Pntr->Hour!=meetH)
		Pntr=Pntr->Next;
	while(Pntr!=NULL && Pntr->Hour==meetH && Pntr->Min!=meetM)
		Pntr=Pntr->Next;
	if(Pntr==NULL || Pntr->Hour!=meetH || Pntr->Min!=meetM)
		return (NULL);
	return (Pntr);
}

Date *AllocateDate()
{
	Date *P=NULL;
	P=malloc(1*sizeof(Date));
	if (P!=NULL)
	{
		P->Meeting=AllocatePgisha();
		if(P->Meeting!=NULL)
		{
			P->Next=NULL;
			P->Prev=NULL;
			P->Day=0;
			return(P);
		}
	}
	return(NULL);
}

Pgisha *AllocatePgisha()
{
	Pgisha *p=NULL;
	p=malloc(1*sizeof(Pgisha));
	if (p!=NULL)
	{
		p->MoreInfo=AllocateMeida();
		if(p->MoreInfo!=NULL)
		{
			p->Next=NULL;
			p->Prev=NULL;
			p->Hour=0;
			p->Min=0;
			return(p);
		}
	}
	return(NULL);
}

Meida *AllocateMeida()
{
	Meida *pn=NULL;
	pn=malloc(1*sizeof(Meida));
	if (pn==NULL)
		return(NULL);
	return(pn);
}

void Schedule()
{
	unsigned char UserInput;
	char Done;

	_setcursortype(_NORMALCURSOR);
	do
	{
		UserInput='q';
		HideMouse();
		FillScreen(BackChar,BLUE,CYAN);
		textbackground(BLUE);
		textcolor(WHITE);
		DrawBorder(1,5,3,75,15);
		CastShadow(3,5,75,15,BackChar);
		Center("´ M a i n   M e n u ֳ",3);
		window(6,4,74,14);
		clrscr();
		gotoxy(5,2);
		HotPrint("1. Add a meeting",'A');
		gotoxy(5,4);
		HotPrint("2. Update a meeting",'U');
		gotoxy(5,6);
		HotPrint("3. Erase one or more meeting(s)",'E');
		gotoxy(5,8);
		HotPrint("4. View one or more meeting(s)",'V');
		gotoxy(5,10);
		HotPrint("5. Exit APPOINTMENT",'x');
		window(1,1,80,25);
		textcolor(LIGHTGREEN);
		textbackground(LIGHTBLUE);
		Center("  Please choose one of the above,  ",18);
		Center("  click on it or type its number   ",19);
		Center("  or its hotkey.                   ",20);
		textcolor(LIGHTRED);
		Center(" ִ   ִ ",22);
		gotoxy(wherex()-5,wherey());
		ShowMouse();
		Done='0';
		do
		{
			UserInput=0;
			while(!kbhit() && !MouseButton());
			if(kbhit())
				UserInput=getch();
			else
			{
				xMouse=whereMouseX();
				yMouse=whereMouseY();
				switch(yMouse)
				{
					case 5:
						if(xMouse >= 10 && xMouse <= 25)
							UserInput='1';
						break;
					case 7:
						if(xMouse >= 10 && xMouse <= 29)
							UserInput='2';
						break;
					case 9:
						if(xMouse >= 10 && xMouse <= 40)
							UserInput='3';
						break;
					case 11:
						if(xMouse >= 10 && xMouse <= 39)
							UserInput='4';
						break;
					case 13:
						if(xMouse >= 10 && xMouse <= 28)
							UserInput='5';
						break;
				}
			}
			switch(UserInput)
			{
				case '1':
				case 'A':
				case 'a':
					AddMeeting();
					Done='1';
					break;
				case '2':
				case 'U':
				case 'u':
					UpdateMeeting();
					Done='1';
					break;
				case '3':
				case 'E':
				case 'e':
					EraseMeeting();
					Done='1';
					break;
				case '4':
				case 'V':
				case 'v':
					PrintMeeting();
					Done='1';
					break;
				case '5':
				case 'X':
				case 'x':
					Done='1';
					break;
			}
		}
		while(Done=='0');
	}
	while(UserInput!='X' && UserInput!='x' && UserInput!='5');
}

void AddMeeting()
{
	char GetOut;
	int Yom=1;
	Date *Pnt=NULL;
	Pgisha *Point=NULL;

	do
	{
		HideMouse();
		_setcursortype(_NOCURSOR);
		FillScreen(' ',WHITE,BLUE);
		textbackground(BLUE);
		textcolor(YELLOW);
		DrawBorder(2,1,1,80,24);
		Center("¹ Adding a meeting ּ",1);
		textcolor(WHITE);
		Center("Please select a date (via mouse or the TAB key. when you're done,",CalendarY-3);
		Center("press ENTER) or press Escape to return to the main menu:",CalendarY-2);
		Center("ִ¯??®ִ",CalendarY-1);
		gotoxy(wherex()-4,wherey());
		cprintf("%02d",Yom);
		DrawCalendar();
		if(kbhit())
			getch();
		ShowMouse();
		do
		{
			GetOut=0;
			while ((!kbhit()) && ((GetOut=MouseButton()) == 0));
			if(GetOut==0) //The user pressed a key rather than clicked the mouse
			{
				GetOut = getch();
				if(GetOut==9) //TAB key
				{
					Yom++;
					Yom = Yom & MaxDays; //Masking
					if(Yom==0)
						Yom=1;
					gotoxy(39,CalendarY-1);
					cprintf("%02d",Yom);
				}
			}
			else
			{
				xMouse=whereMouseX()-CalendarX;
				yMouse=whereMouseY()-CalendarY;
				if(xMouse>=0 && yMouse>=0)
				{
					xMouse+=CalendarX;
					yMouse+=CalendarY;
					GetOut=Yom; //Retain the old Yom, it might be useful
					Yom=ExtractDayFromCalendar();
					if(Yom==0) //Not checking for HolyDay because it's a valid input
						Yom=GetOut;
					gotoxy(39,CalendarY-1);
					cprintf("%02d",Yom);
					GetOut=13;
				}
			}
			if((Yom!=0 && Yom % HolyDay !=0) && GetOut==13 || GetOut==10)
					{
						Pnt=FindDay(Yom);
						if(Pnt!=NULL) //The day exists
						{
							Point=GetAttributes(Yom);
							if(Point!=NULL)
							{
								MeetingSort(Pnt,Point);
								GetOut=27;
							}
							else
								GetOut=26;
						}
						else
						{
							Pnt=AllocateDate();
							if(Pnt==NULL)
							{
								clrscr();
								textcolor(RED+BLINK);
								cprintf("Fatal error: Cannot allocate enough"
										" memory for a day.\r\n\n");
								textcolor(LIGHTGRAY);
								Free();
								exit(1);
							}
							Pnt->Day=Yom;
							free(Pnt->Meeting);
							Point=GetAttributes(Yom);
							if(Point==NULL)
							{
								free(Pnt);
								GetOut=26;
							}
							else
							{
								Pnt->Meeting=Point;
								if(Head==NULL) //First time ever
									Head=Pnt;
								else
									DateSort(Pnt);
								GetOut=27;
							}
						}
					}
		}
		while(GetOut < 26 || GetOut > 27);
		_setcursortype(_NORMALCURSOR);
	}
	while(GetOut!=27 && Point==NULL);
}

Pgisha *GetAttributes(int TheDay)
{
	int meetH, meetM;
	char FreeText[MaxFreeText];
	char Input='Y';
	Pgisha *Temp, *Point;

	HideMouse();
	textcolor(WHITE);
	DrawBorder(1,5,3,75,22);
	CastShadow(3,5,75,22,' ');
	gotoxy(8,3);
	cprintf("´ New meeting attributes at %d-%s-%d ֳ",TheDay,Month,Year);
	Center("      ",CalendarY-1); //Clear the line of the userinput
	window(7,5,73,21);
	clrscr();
	_setcursortype(_NORMALCURSOR);
	ShowMouse();
	Point=AllocatePgisha();
	if(Point==NULL)
	{
		_setcursortype(_NOCURSOR);
		textcolor(RED+BLINK);
		Center("ERROR:",8);
		textcolor(RED);
		Center("Couldn't allocate enough memory for a new meeting.",9);
		textcolor(MAGENTA);
		Center("Press any key or click a mouse button to continue...",17);
		if(kbhit())
			getch();
		while((!kbhit()) && (!MouseButton()));
		_setcursortype(_NORMALCURSOR);
	}
	else
	{
	  do
	  {
		meetH=0;
		meetM=0;
		textcolor(LIGHTBLUE);
		Temp=LastMeeting(TheDay);
		if(Temp!=NULL)
		{
			meetH=Temp->Hour;
			meetM=Temp->Min;
		}
		if(meetH!=0)
		{
			AddTimeGap(&meetH,&meetM);
			if(meetH < EndWork)
			{
				_setcursortype(_NOCURSOR);
				cprintf("The next most appropriate time for a meeting is "
						"%02d:%02d.",meetH,meetM);
				gotoxy(1,wherey()+1);
				cprintf("Do you want to set a different time for your meeting"
						" (Y/N)? ");
				if(kbhit())
					getch();
				do
					Input=toupper(getch());
				while(Input != 'Y' && Input != 'N');
				_setcursortype(_NORMALCURSOR);
				cprintf("\r\n");
			}
			else
				meetH=0;
		}
		if(meetH==0 || Input=='Y') //Not using 'else' because we are also
		{						   //checking for the input
			do
			{
				HideMouse();
				clrscr();
				ShowMouse();
				textcolor(MAGENTA);
				Center("Type \"ex\" to return to the day selection screen",17);
				textcolor(LIGHTBLUE);
				gotoxy(1,1);
				cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
				fflush(stdin);
				scanf("%2s",&FreeText);
				if(stricmp(FreeText,"ex")==0)
				{
					free(Point);
					Point=NULL;
					Input='f';
				}
				while((atoi(FreeText) < StartWork || atoi(FreeText) >= EndWork) && (Input!='f'))
				{
					_setcursortype(_NOCURSOR);
					textcolor(RED+BLINK);
					Center("Invalid hour!",wherey()+1);
					textcolor(RED);
					Center("Please make sure that the input is within its limits.",wherey()+2);
					textcolor(MAGENTA);
					Center("Press any key or click a mouse button to continue...",17);
					if(kbhit())
						getch();
					while((!kbhit()) && (!MouseButton()));
					if(kbhit())
						getch(); //Not returning the key the user pressed to anything
					HideMouse();
					clrscr();
					ShowMouse();
					Center("Type \"ex\" to return to the day selection screen",17);
					textcolor(LIGHTBLUE);
					gotoxy(1,1);
					textcolor(LIGHTBLUE);
					cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
					_setcursortype(_NORMALCURSOR);
					fflush(stdin);
					scanf("%2s",&FreeText);
					if(stricmp(FreeText,"ex")==0)
					{
						free(Point);
						Point=NULL;
						Input='f';
					}
				}
				if(Input!='f')
				{
					meetH=atoi(FreeText);
					HideMouse();
					clrscr();
					ShowMouse();
					textcolor(MAGENTA);
					Center("Type \"ex\" to return to the day selection screen",17);
					textcolor(LIGHTBLUE);
					gotoxy(1,1);
					cprintf("Enter the minute part of the meeting's time (0-59): ");
					fflush(stdin);
					scanf("%2s",&FreeText);
					if(stricmp(FreeText,"ex")==0)
					{
						free(Point);
						Point=NULL;
						Input='f';
					}
					while((atoi(FreeText) < 0 || atoi(FreeText) > 59) && (Input!='f'))
					{
						_setcursortype(_NOCURSOR);
						textcolor(RED+BLINK);
						Center("Invalid Minute!",wherey()+1);
						textcolor(RED);
						Center("Please make sure that the input is within its limits.",wherey()+2);
						textcolor(MAGENTA);
						Center("Press any key or click a mouse button to continue...",17);
						if(kbhit())
							getch();
						while((!kbhit()) && (!MouseButton()));
						if(kbhit())
							getch(); //Not returning the key the user pressed to anything
						HideMouse();
						clrscr();
						ShowMouse();
						Center("Type \"ex\" to return to the day selection screen",17);
						textcolor(LIGHTBLUE);
						gotoxy(1,1);
						textcolor(LIGHTBLUE);
						cprintf("Enter the minute part of the meeting's time (0-59): ");
						_setcursortype(_NORMALCURSOR);
						fflush(stdin);
						scanf("%2s",&FreeText);
						if(stricmp(FreeText,"ex")==0)
						{
							free(Point);
							Point=NULL;
							Input='f';
						}
					}
					if(Input!='f')
					{
						meetM=atoi(FreeText);
						if(FindMeeting(TheDay,meetH,meetM))
						{
							_setcursortype(_NOCURSOR);
							textcolor(RED+BLINK);
							Center("Invalid meeting time!",wherey()+1);
							textcolor(RED);
							gotoxy(1,wherey()+2);
							cprintf("Another meeting already exists at the entered time.\r\n");
							cprintf("Do you want to erase the existing one (Y/N)? ");
							cprintf("(Choosing No will allow you to pick a better date/time.)");
							if(kbhit())
								getch();
							do
								Input=toupper(getch());
							while(/*Input != 'Y' &&*/ Input != 'N');
							cprintf("\r\n");
							_setcursortype(_NORMALCURSOR);
							if(Input=='N')
							{
								free(Point);
								Point=NULL;
								Input='f';
							}
							//else
							//	Erase(FindMeeting(TheDay,meetH,meetM));
						}
						else
						if(!ValidTime(TheDay,meetH,meetM))
						{
							_setcursortype(_NOCURSOR);
							textcolor(RED+BLINK);
							Center("Invalid meeting time!",wherey()+1);
							textcolor(RED);
							gotoxy(1,wherey()+2);
							cprintf("Please allow a %d-minutes gap between the meetings.",MinGap);
							textcolor(LIGHTBLUE);
							Center("Press any key or click a mouse button to continue...",17);
							if(kbhit())
								getch();
							while(!kbhit() && !MouseButton());
							if(kbhit())
								getch();
							gotoxy(1,1);
							_setcursortype(_NORMALCURSOR);
						}
					}
				}
			}
			while((Point->Hour!=meetH && !ValidTime(TheDay,meetH,meetM)) && Input!='f');
		}
	  }
	  while(!ConfirmDetails(meetH, meetM, Point, Input));
	} //end of "else" statement
	window(1,1,80,25);
	return (Point);
}

int ConfirmDetails(int meetH, int meetM, Pgisha *Informatzia, char ChipSelect)
{//The time for the meeting is set; get from the user the rest of the attributes
	char Name_[MaxFreeText], Extra_[MaxFreeText], Input;

	if(ChipSelect=='f')
		return 1; //Can't do anything, the user chose to abort

	HideMouse();
	clrscr();
	ShowMouse();
	Center("Meeting time:      ",1);
	gotoxy(wherex()-5,wherey());
	cprintf("%02d:%02d\r\n",meetH,meetM);
	cprintf("Enter the name of the person you are to meet: \r\n");
	fflush(stdin);
	gets(Name_);

	gotoxy(1,wherey());
	cprintf("Enter any more information you want to store about the "
			"meeting (%d characters maximum, please): \r\n",MaxFreeText);
	fflush(stdin);
	gets(Extra_);

	_setcursortype(_NOCURSOR);
	gotoxy(1,wherey());
	cprintf("Is the information that appears above correct (Y/N)?");
	if(kbhit())
		getch();
	do
		Input=toupper(getch());
	while(Input != 'Y' && Input != 'N');

	HideMouse();
	clrscr();
	ShowMouse();
	_setcursortype(_NORMALCURSOR);
	if(Input == 'N')
		return 0;
	Informatzia->Hour=meetH;
	Informatzia->Min=meetM;
	strcpy(Informatzia->MoreInfo->Person,Name_);
	strcpy(Informatzia->MoreInfo->Details,Extra_);
	return 1;
}

void UpdateMeeting()
{ /*
	char GetOut;
	int Yom=1;
	Date *Pnt=NULL;
	Pgisha *Point=NULL;

	do
	{
		HideMouse();
		_setcursortype(_NOCURSOR);
		FillScreen(' ',WHITE,BLUE);
		textbackground(BLUE);
		textcolor(YELLOW);
		DrawBorder(2,1,1,80,24);
		Center("¹ Updating a meeting ּ",1);
		textcolor(WHITE);
		Center("Please select a date (via mouse or the TAB key. when you're done,",CalendarY-3);
		Center("press ENTER) or press Escape to return to the main menu:",CalendarY-2);
		Center("ִ¯??®ִ",CalendarY-1);
		gotoxy(wherex()-4,wherey());
		cprintf("%02d",Yom);
		DrawCalendar();
		if(kbhit())
			getch();
		ShowMouse();
		do
		{
			GetOut=0;
			while ((!kbhit()) && ((GetOut=MouseButton()) == 0));
			if(GetOut==0) //The user pressed a key rather than clicked the mouse
			{
				GetOut = getch();
				if(GetOut==9) //TAB key
				{
					Yom++;
					Yom = Yom & MaxDays; //Masking
					if(Yom==0)
						Yom=1;
					gotoxy(39,CalendarY-1);
					cprintf("%02d",Yom);
				}
			}
			else
			{
				xMouse=whereMouseX()-CalendarX;
				yMouse=whereMouseY()-CalendarY;
				if(xMouse>=0 && yMouse>=0)
				{
					xMouse+=CalendarX;
					yMouse+=CalendarY;
					GetOut=Yom; //Retain the old Yom, it might be useful
					Yom=ExtractDayFromCalendar();
					if(Yom==0 || Yom % HolyDay ==0)
						Yom=GetOut;
					GetOut=13;
				}
			}
			if((Yom!=0 && Yom % HolyDay !=0) && GetOut==13 || GetOut==10)
					{
						Pnt=FindDay(Yom);
						if(Pnt!=NULL) //The day exists
						{
							Point=GetAttributes(Yom);
							if(Point!=NULL)
							{
								MeetingSort(Pnt,Point); //Sorts again, the hours may have changed
								GetOut=27;
							}
							else
								GetOut=26;
						}
						else
						{
							Pnt=AllocateDate();
							if(Pnt==NULL)
							{
								clrscr();
								textcolor(RED+BLINK);
								cprintf("The meeting does not exist."
										" Cannot continue.\r\n\n");
								textcolor(LIGHTGRAY);
								Free();
								exit(1);
							}
							Pnt->Day=Yom;
							free(Pnt->Meeting);
							Point=GetAttributes(Yom);
							if(Point==NULL)
							{
								free(Pnt);
								GetOut=26;
							}
							else
							{
								Pnt->Meeting=Point;
								GetAttributes();
								GetOut=27;
							}
						}
					}
		}
		while(GetOut < 26 || GetOut > 27);
		_setcursortype(_NORMALCURSOR);
	}
	while(GetOut!=27 && Point==NULL); */
}

void EraseMeeting()
{ /*
	char UserInput,GetOut, FreeText[MaxFreeText];
	int Yom=1,Done,meetH[2],meetM[2];
	Date *YomPnt=NULL;
	Pgisha *MeetingPnt=NULL;

	_setcursortype(_NORMALCURSOR);
	do
	{
		HideMouse();
		FillScreen(' ',WHITE,BLUE);
		textbackground(BLUE);
		textcolor(YELLOW);
		DrawBorder(2,1,1,80,24);
		Center("¹ Erase meetings ּ",1);
		textcolor(WHITE);
		DrawBorder(1,CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+5,CalendarY+13);
		CastShadow(CalendarY+2,CalendarX-5,CalendarX+DaysInWeek*DayWidth+5,CalendarY+13,32);
		Center("´ What would you like to do? ֳ",CalendarY+2);
		textcolor(LIGHTGREEN);
		gotoxy(CalendarX-2,CalendarY+4);
		HotPrint("1. Erase all meetings in a specific date",'d');
		gotoxy(CalendarX-2,CalendarY+6);
		HotPrint("2. Erase all meetings in a specific time range",'r');
		gotoxy(CalendarX-2,CalendarY+8);
		HotPrint("3. Erase all meetings with a specific person",'p');
		gotoxy(CalendarX-2,CalendarY+10);
		HotPrint("4. Return to the main menu",'m');
		textcolor(LIGHTRED);
		Center("ִִ   ִִ",CalendarY+13);
		gotoxy(wherex()-5,wherey());
		ShowMouse();
		Done='0';
		do
		{
			UserInput=0;
			while(!kbhit() && !MouseButton());
			if(kbhit())
				UserInput=getch();
			else
			{
				xMouse=whereMouseX();
				yMouse=whereMouseY();
				switch(yMouse)
				{
					case CalendarY+4:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+43)
							UserInput='1';
						break;
					case CalendarY+6:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+49)
							UserInput='2';
						break;
					case CalendarY+8:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+50)
							UserInput='3';
						break;
					case CalendarY+10:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+26)
							UserInput='4';
						break;
				}
			}
			switch(UserInput)
			{
				case '1':
				case 'D':
				case 'd':
					HideMouse();
					_setcursortype(_NOCURSOR);
					window(CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+6,CalendarY+14);
					clrscr(); //Clears the menu
					window(1,1,80,25);
					Center("Please select a date (via mouse or the TAB key. when you're done,",CalendarY-3);
					Center("press ENTER) or press Escape to return to the options menu:",CalendarY-2);
					Center("ִ¯??®ִ",CalendarY-1);
					gotoxy(wherex()-4,wherey());
					cprintf("%02d",Yom);
					DrawCalendar();
					if(kbhit())
						getch();
					ShowMouse();
					do
					{
						GetOut=0;
						while ((!kbhit()) && ((GetOut=MouseButton()) == 0));
						if(GetOut==0) //The user pressed a key rather than clicked the mouse
						{
							GetOut = getch();
							if(GetOut==9) //TAB key
							{
								Yom++;
								Yom = Yom & MaxDays; //Masking
								if(Yom==0)
									Yom=1;
								gotoxy(39,CalendarY-1);
								cprintf("%02d",Yom);
							}
						}
						else
						{
							xMouse=whereMouseX()-CalendarX;
							yMouse=whereMouseY()-CalendarY;
							if(xMouse>=0 && yMouse>=0)
							{
								xMouse+=CalendarX;
								yMouse+=CalendarY;
								GetOut=Yom; //Retain the old Yom, it might be useful
								Yom=ExtractDayFromCalendar();
								if(Yom==0 || Yom % HolyDay ==0)
									Yom=GetOut;
								GetOut=13;
							}
						}
						if((Yom!=0 && Yom % HolyDay !=0) && GetOut==13 || GetOut==10)
							EraseByDay(Yom);
					}
					while((GetOut!=27) && (GetOut!=10 && GetOut!=13));
					_setcursortype(_NORMALCURSOR);
					Done='1';
					break;
				case '2':
				case 'R':
				case 'r':
					HideMouse();
					_setcursortype(_NOCURSOR);
					window(CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+6,CalendarY+14);
					clrscr(); //Clears the menu
					for(Done=0; Done < 2; Done++) {
					window(1,1,80,25);
					ShowMouse();
					cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
					fflush(stdin);
					cscanf("%2s",&FreeText);
					while(atoi(FreeText) < StartWork || atoi(FreeText) >= EndWork)
					{
						textcolor(RED+BLINK);
						Center("Invalid hour!",wherey());
						textcolor(RED);
						Center("Please make sure that the input is within its limits.",wherey()+1);
						textcolor(MAGENTA);
						Center("Press any key or click a mouse button to continue...",17);
						if(kbhit())
							getch();
						while((!kbhit()) && (!MouseButton()));
						if(kbhit())
							getch(); //Not returning the key the user pressed to anything
						HideMouse();
						clrscr();
						ShowMouse();
						gotoxy(1,1);
						textcolor(LIGHTBLUE);
						cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
						fflush(stdin);
						cscanf("%2s",&FreeText);
					}
					meetH[Done]=atoi(FreeText);
					HideMouse();
					clrscr();
					ShowMouse();
					textcolor(MAGENTA);
					Center("Type \"ex\" to return to the day selection screen",17);
					textcolor(LIGHTBLUE);
					gotoxy(1,1);
					cprintf("Enter the minute part of the meeting's time (0-59): ");
					fflush(stdin);
					cscanf("%2s",&FreeText);
					while(atoi(FreeText) < 0 || atoi(FreeText) > 59)
					{
						textcolor(RED+BLINK);
						Center("Invalid Minute!",wherey());
						textcolor(RED);
						Center("Please make sure that the input is within its limits.",wherey()+1);
						textcolor(MAGENTA);
						Center("Press any key or click a mouse button to continue...",17);
						if(kbhit())
							getch();
						while((!kbhit()) && (!MouseButton()));
						if(kbhit())
							getch(); //Not returning the key the user pressed to anything
						HideMouse();
						clrscr();
						ShowMouse();
						gotoxy(1,1);
						textcolor(LIGHTBLUE);
						cprintf("Enter the minute part of the meeting's time (0-59): ");
						fflush(stdin);
						cscanf("%2s",&FreeText);
					}
					meetH[Done]=atoi(FreeText);
					} //End of for
					EraseByRange(meetH[0],meetM[0],meetH[1],meetM[1]);
					Done='1';
					break;
				case '3':
				case 'P':
				case 'p':
					HideMouse();
					clrscr();
					ShowMouse();
					cprintf("Enter the name: ");
					fflush(stdin);
					gets(FreeText);
					MeetingPnt=FindMeetingByName(FreeText);
					while(MeetingPnt!=NULL)
					{
						Erase(MeetingPnt);
						MeetingPnt=FindMeetingByName(FreeText);
					}
					Done='1';
					break;
				case '4':
				case 'M':
				case 'm':
					Done='1';
					break;
			}
		}
		while(Done=='0');
	}
	while(UserInput!='M' && UserInput!='m' && UserInput!='4');
	*/
}

void PrintMeeting()
{
	char UserInput,GetOut, FreeText[6];
	int Yom=1,Done,meetH[2],meetM[2];
	Date *YomPnt=NULL;
	Pgisha *MeetingPnt=NULL;

	_setcursortype(_NOCURSOR);
	do
	{
		HideMouse();
		FillScreen(' ',WHITE,BLUE);
		textbackground(BLUE);
		textcolor(YELLOW);
		DrawBorder(2,1,1,80,24);
		Center("¹ View meetings ּ",1);
		textcolor(WHITE);
		DrawBorder(1,CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+5,CalendarY+13);
		CastShadow(CalendarY+2,CalendarX-5,CalendarX+DaysInWeek*DayWidth+5,CalendarY+13,32);
		Center("´ What would you like to do? ֳ",CalendarY+2);
		textcolor(LIGHTGREEN);
		gotoxy(CalendarX-2,CalendarY+4);
		HotPrint("1. View all of the meetings in a specific date",'d');
		gotoxy(CalendarX-2,CalendarY+6);
		HotPrint("2. View all of the meetings in a specific time range",'r');
		gotoxy(CalendarX-2,CalendarY+8);
		HotPrint("3. View all of the meetings, start with the first one",'a');
		gotoxy(CalendarX-2,CalendarY+10);
		HotPrint("4. Return to the main menu",'m');
		textcolor(LIGHTRED);
		Center("ִִ   ִִ",CalendarY+13);
		gotoxy(wherex()-5,wherey());
		ShowMouse();
		_setcursortype(_NORMALCURSOR);
		Done='0';
		do
		{
			UserInput=0;
			while(!kbhit() && !MouseButton());
			if(kbhit())
				UserInput=getch();
			else
			{
				xMouse=whereMouseX();
				yMouse=whereMouseY();
				switch(yMouse)
				{
					case CalendarY+4:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+43)
							UserInput='1';
						break;
					case CalendarY+6:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+49)
							UserInput='2';
						break;
					case CalendarY+8:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+50)
							UserInput='3';
						break;
					case CalendarY+10:
						if(xMouse >= CalendarX-2 && xMouse <= CalendarX+26)
							UserInput='4';
						break;
				}
			}
			switch(UserInput)
			{
				case '1':
				case 'D':
				case 'd':
					HideMouse();
					_setcursortype(_NOCURSOR);
					window(CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+6,CalendarY+14);
					clrscr(); //Clears the menu
					window(1,1,80,25);
					Center("Please select a date (via mouse or the TAB key. when you're done,",CalendarY-3);
					Center("press ENTER) or press Escape to return to the options menu:",CalendarY-2);
					Center("ִ¯??®ִ",CalendarY-1);
					gotoxy(wherex()-4,wherey());
					cprintf("%02d",Yom);
					DrawCalendar();
					if(kbhit())
						getch();
					ShowMouse();
					do
					{
						GetOut=0;
						while ((!kbhit()) && ((GetOut=MouseButton()) == 0));
						if(GetOut==0) //The user pressed a key rather than clicked the mouse
						{
							GetOut = getch();
							if(GetOut==9) //TAB key
							{
								Yom++;
								Yom = Yom & MaxDays; //Masking
								if(Yom==0)
									Yom=1;
								gotoxy(39,CalendarY-1);
								cprintf("%02d",Yom);
							}
						}
						else
						{
							xMouse=whereMouseX()-CalendarX;
							yMouse=whereMouseY()-CalendarY;
							if(xMouse>=0 && yMouse>=0)
							{
								xMouse+=CalendarX;
								yMouse+=CalendarY;
								GetOut=Yom; //Retain the old Yom, it might be useful
								Yom=ExtractDayFromCalendar();
								if(Yom==0 || Yom % HolyDay ==0)
									Yom=GetOut;
								GetOut=13;
							}
						}
						if((Yom!=0 && Yom % HolyDay !=0) && GetOut==13 || GetOut==10)
							PrintMeetingInDay(Yom);
					}
					while((GetOut!=27) && (GetOut!=10 && GetOut!=13));
					Done='1';
					break;
				case '2':
				case 'R':
				case 'r':
					HideMouse();
					_setcursortype(_NOCURSOR);
					window(CalendarX-5,CalendarY+2,CalendarX+DaysInWeek*DayWidth+6,CalendarY+14);
					clrscr(); //Clears the menu
					for(Done=0; Done < 2; Done++) {
					window(1,1,80,25);
					ShowMouse();
					cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
					fflush(stdin);
					cscanf("%2s",&FreeText);
					while(atoi(FreeText) < StartWork || atoi(FreeText) >= EndWork)
					{
						textcolor(RED+BLINK);
						Center("Invalid hour!",wherey());
						textcolor(RED);
						Center("Please make sure that the input is within its limits.",wherey()+1);
						textcolor(MAGENTA);
						Center("Press any key or click a mouse button to continue...",17);
						if(kbhit())
							getch();
						while((!kbhit()) && (!MouseButton()));
						if(kbhit())
							getch(); //Not returning the key the user pressed to anything
						HideMouse();
						clrscr();
						ShowMouse();
						gotoxy(1,1);
						textcolor(LIGHTBLUE);
						cprintf("Enter the hour of the meeting (%d-%d): ",StartWork,EndWork);
						fflush(stdin);
						cscanf("%2s",&FreeText);
					}
					meetH[Done]=atoi(FreeText);
					HideMouse();
					clrscr();
					ShowMouse();
					textcolor(MAGENTA);
					Center("Type \"ex\" to return to the day selection screen",17);
					textcolor(LIGHTBLUE);
					gotoxy(1,1);
					cprintf("Enter the minute part of the meeting's time (0-59): ");
					fflush(stdin);
					cscanf("%2s",&FreeText);
					while(atoi(FreeText) < 0 || atoi(FreeText) > 59)
					{
						textcolor(RED+BLINK);
						Center("Invalid Minute!",wherey());
						textcolor(RED);
						Center("Please make sure that the input is within its limits.",wherey()+1);
						textcolor(MAGENTA);
						Center("Press any key or click a mouse button to continue...",17);
						if(kbhit())
							getch();
						while((!kbhit()) && (!MouseButton()));
						if(kbhit())
							getch(); //Not returning the key the user pressed to anything
						HideMouse();
						clrscr();
						ShowMouse();
						gotoxy(1,1);
						textcolor(LIGHTBLUE);
						cprintf("Enter the minute part of the meeting's time (0-59): ");
						fflush(stdin);
						cscanf("%2s",&FreeText);
					}
					meetH[Done]=atoi(FreeText);
					} //End of for
					PrintByRange(meetH[0],meetM[0],meetH[1],meetM[1]);
					Done='1';
					break;
				case '3':
				case 'A':
				case 'a':
					HideMouse();
					clrscr();
					ShowMouse();
					_setcursortype(_NORMALCURSOR);
					YomPnt=Head;
					while(YomPnt!=NULL)
					{
						printf("Meetings for %d-%s-%d:\n", YomPnt->Day, Month, Year);
						MeetingPnt=YomPnt->Meeting;
						while(MeetingPnt!=NULL)
						{
							printf("\t%02d:%02d (%s), %s\n",MeetingPnt->Hour,MeetingPnt->Min,
									MeetingPnt->MoreInfo->Person,MeetingPnt->MoreInfo->Details);
							MeetingPnt=MeetingPnt->Next;
						}
						YomPnt=YomPnt->Next;
					}
					getch();
					_setcursortype(_NOCURSOR);
					Done='1';
					break;
				case '4':
				case 'M':
				case 'm':
					Done='1';
					break;
			}
		}
		while(Done=='0');
	}
	while(UserInput!='M' && UserInput!='m' && UserInput!='4');
}

void PrintMeetingInDay(short int Yom)
{
	Date *YomPnt;
	Pgisha *MeetPnt;
	char UserInput;

	do
	{
		HideMouse();
		textcolor(DARKGRAY);
		textbackground(LIGHTGRAY);
		DrawBorder(1,20,8,60,19);
		CastShadow(8,20,60,19,32);
		window(21,9,59,18);
		clrscr();
		window(1,1,80,25);
		gotoxy(23,8);
		cprintf("´ Meetings at %d-%s-%d ֳ", Yom, Month, Year);
		gotoxy(40,19);
		cprintf("´ (ESC to abort) ֳ");

		YomPnt=FindDay(Yom);
		if(YomPnt==NULL) //The day does not exist
		{
			textcolor(LIGHTMAGENTA+BLINK);
			Center("There are no meetings in this day",13);
		}
		else
		{
			MeetPnt=YomPnt->Meeting;
			while(MeetPnt!=NULL)
			{
				printf("\t%02d:%02d (%s), %s\n",MeetPnt->Hour,MeetPnt->Min,
						MeetPnt->MoreInfo->Person,MeetPnt->MoreInfo->Details);
				MeetPnt=MeetPnt->Next;
			}
		}
		UserInput=getch();
	}
	while(UserInput!=27);
}

void PrintByRange(int LShour, int LSmin, int MShour, int MSmin)
{
}

int NumMeetings(short int Yom)
{
	Date *Pntr=Head;
	Pgisha *SubPoint;
	int HowMuch=0;

	while(Pntr!=NULL && Pntr->Day < Yom)
		Pntr=Pntr->Next;

	if(Pntr!=NULL && Pntr->Day==Yom)
	{
		SubPoint=Pntr->Meeting;
		while(SubPoint!=NULL)
		{
			HowMuch++;
			SubPoint=SubPoint->Next;
		}
	}
	return (HowMuch);
}

Pgisha *LastMeeting(int TheDay)
{
	Date *Temp=Head;
	Pgisha *Pntr;

	while(Temp!=NULL && Temp->Day!=TheDay)
		Temp=Temp->Next;
	if(Temp!=NULL) //Found the day
	{
		Pntr=Temp->Meeting;
		while(Pntr->Next!=NULL)
			Pntr=Pntr->Next;
	}
	else
		return (NULL);
	return (Pntr);
}

void AddTimeGap(int *Hour, int *Min)
{
	if(*Min < MinGap)
		*Min+=MinGap;
	else
	{
		(*Hour)++;
		*Min = 0 + (*Min-MinGap);
	}
}

void SubstractTimeGap(int *Hour, int *Min)
{
	if(*Min >= MinGap)
		*Min-=MinGap;
	else
	{
		(*Hour)--;
		*Min = 60 + (*Min-MinGap);
	}
}

int ValidTime(int Yom, int Hour, int Min)
{
	Date *Temp=Head;
	Pgisha *Pntr1, *Pntr2;
	int tempH=Hour, tempM=Min;
	int isValid=0;

	while(Temp!=NULL && Temp->Day!=Yom)
		Temp=Temp->Next;
	if(Temp!=NULL) //Found the day
	{
		//Making Pntr1 to contain the next time of meetings after [Hour]:[Min]
		Pntr1=Temp->Meeting;
		while(Pntr1!=NULL && CompareTime(Pntr1->Hour,Pntr1->Min,Hour,Min) <= 0)
			Pntr1=Pntr1->Next;
		if(Pntr1!=NULL)
		{
		//Making Pntr2 to contain the meeting time just before the time in Pntr1
			Pntr2=Pntr1->Prev;

			if(Pntr2!=NULL)
			{
				AddTimeGap(&tempH, &tempM);
				if(CompareTime(tempH,tempM, Pntr1->Hour, Pntr1->Min) <= 0)
				{
					tempH=Hour;
					tempM=Min;
					SubstractTimeGap(&tempH, &tempM);
					if(CompareTime(tempH, tempM, Pntr2->Hour, Pntr2->Min) >=0)
						isValid=1; //The time is okay
				}
			}
			else
			{
				AddTimeGap(&tempH, &tempM);
				if(CompareTime(tempH, tempM, Pntr1->Hour, Pntr1->Min) <= 0)
					isValid=1;
			}
		}
		else
			Pntr1=LastMeeting(Yom);
			if(Pntr1==NULL)
				isValid=1; //There are no other meeting in that day
			else
			{
				tempH=Hour;
				tempM=Min;
				SubstractTimeGap(&tempH, &tempM);
				if(CompareTime(tempH, tempM, Pntr1->Hour, Pntr1->Min) >= 0)
					isValid=1;
			}
	}
	else
		isValid=1; //The day does not exists (yet...)

	return(isValid);
}

int ExtractDayFromCalendar()
{
	int i=0;

	do
		i++;
	while(i<=MaxDays &&
		 !(XCoorCalendar[i-1]<=xMouse && (XCoorCalendar[i-1]+DayWidth-2)>=xMouse &&
		 YCoorCalendar[i-1]<=yMouse && (YCoorCalendar[i-1]+DayHeight-2)>=yMouse));

	if(i>MaxDays)
		return 0;
	return i;
}

int CompareTime(int Hour1, int Min1, int Hour2, int Min2)
/* Compares two times, divided to hours and minutes
   Returns...		If...
	-1					Time1 < Time2
	 0					Time1 = Time2
	+1					Time1 > Time2                   */
{
	if(Hour1 < Hour2)
		return (-1);
	else
		if(Hour1 > Hour2)
			return (1);
		else //Hour1 equals to Hour2
			if(Min1 < Min2)
				return (-1);
			else
				if(Min1 > Min2)
					return (1);
				else //The times are equal
					return (0);
}

void Free()
{
	Date *Temp,*p=Head;
	while (p!=NULL)
	{
		Temp=p->Next;
		free((p->Meeting)->MoreInfo);
		free(p->Meeting);
		free(p);
		p=Temp;
	}
}

void InitMouse()
{
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=0;
	int86(0x33,&i,&o);
	if(o.x.ax!=0)
		ShowMouse();
}

int MouseButton()
{
	/* MouseButton()
	   Returns the number of the mouse-button that has been just clicked:
	   0	No button was pressed
	   1	Left button was pressed
	   2	Right button was pressed
	   3	Left and Right buttons were pressed
	   4	Middle button was pressed
	   5	Left and Middle buttons were pressed
	   6	Right and Middle buttons were pressed
	   7	Left, Middle and Right buttons were pressed altogheter.        */
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=3;
	int86(0x33,&i,&o);
	return(o.x.bx&7);
}

void ShowMouse()
{
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=1;
	int86(0x33,&i,&o);
}

void HideMouse()
{
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=2;
	int86(0x33,&i,&o);
}

int whereMouseX()
{
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=3;
	int86(0x33,&i,&o);
	return((o.x.cx/8)+1);
}

int whereMouseY()
{
	union REGS i,o; //Declare the REGS used by the mouse portions of the program

	i.x.ax=3;
	int86(0x33,&i,&o);
	return((o.x.dx/8)+1);
}