#include <conio.h>
#include <iostream.h>
#include <iomanip.h>
#include <dos.h>

void kalender (long *hari, int n);
void tanggal(int *tgl,int *bln, int *thn);
void getdate (struct date *tanggal);

int main()
{
int tgl, bln, thn;
int tglc, blnc, thnc;
int show=0;
long hari=0;
char tombol;

//mengambil data tanggal hari ini
tanggal(&tgl, &bln, &thn);
tglc=tgl;
blnc=bln;
thnc=thn;

do
{
hari=0;
clrscr();
cout << endl;
cout << endl;
cout << "\t\t\t Kalender" ;
cout << endl << endl;

//menampilkan tanggal
cout << " Today : " << tglc << ' ';
if (blnc==1)
cout << "Januari";
else if (blnc==2)
cout << "Februari";
else if (blnc==3)
cout << "Maret";
else if (blnc==4)
cout << "April";
else if (blnc==5)
cout << "Mei";
else if (blnc==6)
cout << "Juni";
else if(blnc==7)
cout << "Juli" ;
else if (blnc==8)
cout << "Agustus";
else if (blnc==9)
cout << "September";
else if (blnc==10)
cout << "Oktober";
else if (blnc==11)
cout << "November";
else if (blnc==12)
cout << "Desember";
cout << ' ' << thnc ;

if (show)
{
cout << "\t\t\t <R>emove Menu" ;
}
else
cout << "\t\t\t <S>how Menu" ;

cout << endl << endl;
cout << "\t\t " << setw(9);

if (bln==1)
cout << "Januari";
else if (bln==2)
cout << "Februari";
else if (bln==3)
cout << "Maret";
else if (bln==4)
cout << "April";
else if (bln==5)
cout << "Mei";
else if (bln==6)
cout << "Juni";
else if(bln==7)
cout << "Juli" ;
else if (bln==8)
cout << "Agustus";
else if (bln==9)
cout << "September";
else if (bln==10)
cout << "Oktober";
else if (bln==11)
cout << "November";
else if (bln==12)
cout << "Desember";
cout << ' ' << thn ;
cout << endl << endl ;

//menghitung banyak hari dari tanggal 1 januari 1900 sampai tanggal sekarang
for (int i=1900 ; i<thn ; i++)
{
if (i%4==0)
hari+=366;
else
hari+=365;
}

for (i=1 ; i<bln ; i++)
{
if (i==1 || i==3 || i==5 || i==7 || i==8 || i==10 || i==12)
hari+=31;
else if (i==4 || i==6 || i==9 || i==11)
hari+=30;
else if (i==2 && thn%4==0)
hari+=29;
else
hari+=28;
}

//menampilkan kalender
i=bln;
if (i==1 || i==3 || i==5 || i==7 || i==8 || i==10 || i==12)
kalender(&hari,31);
else if (i==4 || i==6 || i==9 || i==11)
kalender(&hari,30);
else if (i==2 && thn%4==0)
kalender(&hari,29);
else
kalender(&hari,28);

//menampilkan menu
if (show)
{
cout << endl << endl;
cout << " <U> Next Year <K> Next Month <G>Goto <E>exit" << endl;
cout << " <J> Previous Year <H> Previous Month <A>About" << endl;
}
else
;

//menunggu penekanan tombol keyboard
tombol=getch();

//jika penekanan tombol telah dilakukan
if (tombol=='u' || tombol=='U')
thn++;
else if (tombol=='s' || tombol=='S')
show=1;
else if (tombol=='r' || tombol=='R')
show=0;
else if (tombol=='h' || tombol=='H')
if (bln==1)
{
bln=12;
thn--;
}
else
bln--;
else if (tombol=='j' || tombol=='J')
thn--;
else if (tombol=='k' || tombol=='K')
if (bln==12)
{
bln=1;
thn++;
}
else
bln++;
else if (tombol=='e' || tombol=='E')
goto exit;
else if (tombol=='a' || tombol=='A')
{
clrscr();
cout << endl << endl;
cout << " Program Kalender 1.04" << endl;
cout << " Duken Marga Turnip (duken_mt@yahoo.co.id)" << endl << endl;
cout << " compiled with Turbo C++ 1.01" << endl;
cout << " edited with Notepad++ 5.03" << endl;
cout << " 1 Januari 2008" << endl;
cout << " How to Use :" << endl;
cout << " When you run this program, it will display the currently month in" << endl;
cout << " your computer. You can also see other month or year by pressing" << endl;
cout << " key like 'U' to see next year, 'H' to see prevoius month, etc. " << endl;
cout << " Use it with your right hand like using arrow keyboard ^.^" << endl << endl;
cout << "\t\t" << " U" << endl;
cout << "\t\t" << "H J K" << endl << endl ;
cout << " You can also go to date you want in menu Go To and fill the month " << endl;
cout << " and year you want to see." << endl;
cout << " This calendar can display the date from 1 January 1900 up to the future." << endl;
cout << " hehehe..." << endl << endl ;
cout << " Press any key to go back..";
getch();
}
else if (tombol=='g' || tombol=='G')
{
clrscr();
cout << endl << endl << endl;
cout << " GO TO..." << endl << endl;
do
{
cout << " Month : ";
cin >> bln;
} while (bln<1 || bln>12);
do
{
cout << " Year : ";
cin >> thn;
} while (thn<1900);

}
else
;
} while (1);

exit:
return 0;
}

void kalender (long *hari, int n)
{
cout << " MINGGU SENIN SELASA RABU KAMIS JUMAT SABTU ";
cout << endl << endl;
for (int i=1 ; i<=n ; i++)
{
int angka=0;
angka=*hari%7;
if (i==1)
cout << setw((angka+1)*10) << i;
else
cout << setw (10) << i ;
(*hari)++;
if (angka==6)
cout << endl << endl;
}
}

void tanggal (int *tgl,int *bln, int *thn)
{
struct date tanggal;
getdate(&tanggal);
*tgl=(int) tanggal.da_day;
*bln=(int) tanggal.da_mon;
*thn=tanggal.da_year;
}