int NUMBERS_FOR_BINARY[] = {
  
    B00111111,          // 0
    B00000110,         // 1
    B01011011,        // 2
    B01001111,       // 3
    B01100110,      // 4
    B01101101,     // 5 
    B01111101,    // 6
    B00000111,   // 7
    B01111111,  // 8
    B01101111, // 9
    
    };

void setup() {
  // put your setup code here, to run once:
  
    DDRD |= 0x7F;
    DDRC |= 0x7F;

}

int I = 0;
int K = 9;
bool Chenge = false;

void loop() {
  // put your main code here, to run repeatedly:

  
   if(Chenge == false)
   {

     for(int J = 0; J <= 9; J ++)
    {
      PORTC = NUMBERS_FOR_BINARY[J];
      delay(200);
    }
    I ++;
    PORTD = NUMBERS_FOR_BINARY[I];
    if(I==9)
    {
      Chenge=!Chenge;
      K = 9;
    }
   }
    
    if(Chenge == true)
    {
      for(int J = 9; J >= 0; J --)
    {
      PORTC = NUMBERS_FOR_BINARY[J];
      delay(200);
    }
    K --;
    PORTD = NUMBERS_FOR_BINARY[K];
    if(K==0)
    {
      Chenge = !Chenge;
      I = 0;
    }
    }

}