#include <stdio.h>
#include <conio.h>
#include <dos.h>
#include <stdlib.h>
void salir();
void ajustar();
void menu();
void reloj();
int main()
{
int i,j,k;
clrscr();
menu();
getch();
return 0;
}
void salir()
{
int i;
for(i=9;i>=0;i--)
	{
	delay(500);gotoxy(20,20);printf("saliendo en: %d",i);
	}
	exit(0);
}
void menu()
{
int i;
clrscr();
gotoxy(20,20);printf("iniciar reloj   [1]");
gotoxy(20,21);printf("ajustar hora    [2]");
gotoxy(20,22);printf("salir           [3]");
gotoxy(20,23);printf("elige tu opcion [ ];");gotoxy(37,23);scanf("%i",&i);

	switch(i)
	{
	case 1: reloj();break;
	case 2: ajustar();break;
	case 3:  clrscr();salir();break;
	default: printf("Error 0001");break;
	}
}
void reloj()
{
int i,j,k;
char c;
clrscr();
for(i=0;i<=24;i++)
{
	delay(1000);gotoxy(11,10);printf("%i",i);
	for(j=0;j<=60;j++)
	{
	delay(1000);gotoxy(13,10);printf(":%i",j);

		for(k=0;k<=60;k++)
		{
		delay(1000);gotoxy(16,10);printf(":%i",k);
		}
	}
}
}


void ajustar()
{
int i,j,k,a,b,c;
clrscr();
gotoxy(20,20);printf("ajustar hora    [1]");
gotoxy(20,21);printf("menu            [2]");
gotoxy(20,22);printf("salir           [3]");
gotoxy(20,24);printf("elige tu opcion [ ]");gotoxy(37,24);scanf("%i",&i);

	switch(i)
	{
	case 1: gotoxy(20,26);printf("hora    :");gotoxy(37,26);scanf("%i",&a);
		gotoxy(20,27);printf("minutos :");gotoxy(37,27);scanf("%i",&b);
		gotoxy(20,28);printf("segundos:");gotoxy(37,28);scanf("%i",&c);
		break;
	case 2:  clrscr();menu();break;
	case 3:  clrscr();salir();
	default: printf("Error 0001");menu();break;
	}
for(i=a;i<=24;i++)
{
	delay(1000);gotoxy(21,30);printf("%i",i);
	for(j=b;j<=60;j++)
	{
	delay(1000);gotoxy(23,30);printf(":%i",j);

		for(k=c;k<=60;k++)
		{
		delay(1000);gotoxy(26,30);printf(":%i",k);
		}
	}
}
}