#define A PA5
#define B PA6
#define C PA7
#define D PA2
#define E PA12
#define F PA1
#define G PA11
#define DP PA4

#define seg1 PC13
#define seg2 PC14

void setup() {
  // put your setup code here, to run once:
  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(E, OUTPUT);
  pinMode(F, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(DP, OUTPUT);

  pinMode(seg1, OUTPUT);
  pinMode(seg2, OUTPUT);
}
void null() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
}
void eins() {
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
}
void zwei() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(G, HIGH);
}
void drei() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(G, HIGH);
}
void vier() {
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void funf() {
  digitalWrite(A, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void sechs() {
  digitalWrite(A, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(DP, HIGH);
}
void sieben() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
}
void acht() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(E, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
}
void neun() {
  digitalWrite(A, HIGH);
  digitalWrite(B, HIGH);
  digitalWrite(C, HIGH);
  digitalWrite(D, HIGH);
  digitalWrite(F, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(DP, HIGH);
}

void reset() {
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);
  digitalWrite(DP, LOW);
}
void zahlen(int number) {
  switch(number) {
      case 0: null();
      break;
      case 1: eins();
      break;
      case 2: zwei();
      break;
      case 3: drei();
      break;
      case 4: vier();
      break;
      case 5: funf();
      break;
      case 6: sechs();
      break;
      case 7: sieben();
      break;
      case 8: acht();
      break;
      case 9: neun();
      break;
    }
}

int t1me = 1000;

void loop() {
  reset();
  for (int a = 0; a < 100; a++) {
    for (int b = 0; b < 10; b++) {
      for (int c = 0; c < (t1me / 2) /10; c++) {
        digitalWrite(seg2, HIGH);
        zahlen(a);
        digitalWrite(seg1, LOW);
        delay(1);
        reset();

        digitalWrite(seg1, HIGH);
        zahlen(b);
        digitalWrite(seg2, LOW);
        delay(1);
        reset();
      }
    }
  }
}