//press 2nd switch glow the leds as per the given questions
void setup() {
  // put your setup code here, to run once:
volatile char *outf,*dirf,*dirk,*ink,x,y,z,s,r;
volatile long i,j;
dirf=0x30;
*dirf=0xff;
dirk=0x107;
*dirk=0x00;
outf=0x31;
ink=0x106;
while(1){
  x = *ink;
  y= *ink;
  z= *ink;
  int count =0;
if((z & 0x04) !=0){
  count++;
  for(i=0;i<100000;i++);
  *outf=0x02;
  for(i=0;i<100000;i++);
  *outf=0x04;
   for(i=0;i<100000;i++);
    *outf=0x20;
   for(i=0;i<100000;i++);
    *outf=0x40;
   for(i=0;i<100000;i++);
}
   if((x & 0x08)!=0){
    for(i=0;i<100000;i++);
  *outf=0x04;
  for(i=0;i<100000;i++);
  *outf=0x02;
   for(i=0;i<100000;i++);
    *outf=0x80;
   for(i=0;i<100000;i++);
    *outf=0x10;
   for(i=0;i<100000;i++);

   }
   while((x & 0x04 )!=0){
    if(count!=0){
    for(i=0;i<100000;i++);
    *outf=0x01;
    for(i=0;i<100000;i++);
    *outf=0x02;
    for(i=0;i<100000;i++);
    *outf=0x20;
    for(i=0;i<100000;i++);
    *outf=0x40;
    for(i=0;i<100000;i++);
   }
   }
   
   
}
}