#define a  0
#define b 1
#define c 2
#define d  3
#define e  4
#define f  5
#define g  6
#define h  7

void setup()
{
 pinMode(a, OUTPUT);
 pinMode(b, OUTPUT);
 pinMode(c, OUTPUT);
 pinMode(d, OUTPUT);
 pinMode(e, OUTPUT);
 pinMode(f, OUTPUT);
 pinMode(g, OUTPUT);
 pinMode(h, OUTPUT);
}

void zero()
{
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, HIGH);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
 digitalWrite(h, HIGH);
}


void loop()
{
  zero();
}