//Program Clave
#include <stdio.h>

char string[]= "Password Cracked!";
char array[25];
int  b,i,j,x;

char validar (char ch);

main()
{
    textcolor(9);
    textbackground(1); clrscr();
    textbackground(0); clreol();
    printf("Input valid data: ");
    x= wherex();
    for (i=0; array[i-1]!=13 && i<25; i++)
	{
	gotoxy (x+i,1);
	array[i] = getche();
	if ((array[i] == 8) && (i != 0))
	   {
	   gotoxy (wherex(), wherey()) ;
	   clreol();
	   i-= 2;
	   }
	if ((array[i] == 8) && (i == 0))
	   i --;
	array[i] = validar (array[i]);
	}
    textbackground(1);
    puts("");
    x = 30;
    for (i=0; array[i]!=13 && i<25; i++)
	{
	textcolor (9); clreol();
	for (j=255; j != array[i]; j--)
	    {
	    gotoxy (x+i, 5);
	    printf ("%c", j);
	    delay (5);
	    }
	gotoxy (x+i, 5);
	textcolor (15); clreol();
	printf("%c", array[i]);
	}

    x = 30;
    for (i=0; i<18; i++)
	{
	gotoxy (x+i, 10);
	textcolor (4); clreol();
	if (i==9 && !b)
	   {
	   printf ("F");
	   delay (300);
	   continue;
	   }
	if (i==12 && !b)
	   {
	   for (j=1; j<4; j++)
	       {
	       printf ("%c", 8);
	       clreol ();
	       delay (200);
	       }
	   i = 8;
	   b = 1;
	   }
	printf("%c", string[i]);
	delay (300);
	}
    getch();
    return 0;
}

char validar (char ch)
{
     if (ch >47 && ch <58)
	if (ch >52) ch -= 5;
	       else ch += 5;
     ch = islower(ch) ? toupper(ch):tolower(ch);
     return (ch);
}