#define OUT2  2
#define OUT3  1
#define c     0
#define sw1   1
#define sw2   2
#define sw3   3
#define sw4   4
#define sw5   5
#define PD0   0
#define PD1   1 //12
#define PD2   2
#define PD3   3
#define PD4   4
#define U21   8
#define U22   7
#define U31   5
#define U32   6


int main(void)
{
  Serial.begin(9600);
 DDRB  |= (1<<OUT2) | (1<<OUT3) | (1<<U31);
 //DDRD  |= (1<<U21) | (1<<U32) | (1<<U22) | (1<<PD4) | (1<<PD3) | (1<<PD2) | (1<<PD1) | (1<<PD0);
 DDRC  &=~  (1<<sw2) &~ (1<<sw3) &~ (1<<sw4) &~ (1<<sw5) ;	/* Make PD7 as input pin */
 PORTC  |=  (1<<sw2) | (1<<sw3) | (1<<sw4) | (1<<sw5) ;	/* Make PD7 as input pin */

while (1)
{
  
 DDRC |= (1 << c );
//DDRC  &=~  (1<<sw2) &~(1<<sw3) &~ (1<<sw6) &~ (1<<sw7) ;	/* Make PD7 as input pin */
  //delay(1);
  
  if (!(PINC & (1 << sw2))) 
  {
    PORTB |= (1<<OUT2);
    //digitalWrite(OUT2, HIGH);
    //return 3;
  }
   else if (!(PINC & (1 << sw3)))
   {
PORTB &=~ (1<<OUT2);
//digitalWrite(OUT2, LOW);
    //return 4;
  } 
  else if (!(PINC & (1 << sw4))) 
  {
PORTB &=~ (1<<OUT2);
//digitalWrite(OUT2, LOW);
    //return 6;
  } 
  else if (!(PINC & (1 << sw5))) 
  {
PORTB |= (1<<OUT2);
    //digitalWrite(OUT2, HIGH);
   // return 7;
  }
 
   
DDRC |= (1 << sw1 );
//DDRC  &=~  (1<<sw2) &~(1<<sw3) &~ (1<<sw6) &~ (1<<sw7) ;	/* Make PD7 as input pin */
  //delay(1);
  
  if (!(PINC & (1 << sw2))) 
  {
    PORTB |= (1<<OUT2);
    //digitalWrite(OUT2, HIGH);
    //return 3;
  }
   else if (!(PINC & (1 << sw3)))
   {
PORTB &=~ (1<<OUT2);
//digitalWrite(OUT2, LOW);
    //return 4;
  } 
  else if (!(PINC & (1 << sw4))) 
  {
PORTB &=~ (1<<OUT2);
//digitalWrite(OUT2, LOW);
    //return 6;
  } 
  else if (!(PINC & (1 << sw5))) 
  {
PORTB |= (1<<OUT2);
    //digitalWrite(OUT2, HIGH);
   // return 7;
  }
  _delay_ms(50);
    }
    return 0;
}