int a = 19,b = 18,c = 2 ;
int d = 4 ,e = 5 ,f = 21;
int g = 22;
int pins[7] = {a, b, c, d, e, f, g};
int numbers[10][7] = {{0,0,0,0,0,0,1} //zero
                     ,{1,0,0,1,1,1,1} //one 
                     ,{0,0,1,0,0,1,0} //two
                     ,{0,0,0,0,1,1,0} //three
                     ,{1,0,0,1,1,0,0} //four
                     ,{0,1,0,0,1,0,0} //five
                     ,{0,1,0,0,0,0,0} //six
                     ,{0,0,0,1,1,1,1} //seven
                     ,{0,0,0,0,0,0,0} //eight
                     ,{0,0,0,0,1,0,0} //nine
                     };
void setup() {
  for (int i = 0; i < 7;i++){
    pinMode(pins[i],OUTPUT);
  }
}

void loop() {
  for (int j = 0;j < 10;j++){
    for (int k=0;k<7;k++){
      digitalWrite(pins[k],numbers[j][k]);
    }
    delay(1000);
  }
}