int inByte = 0;
int Dummy = 0;

void setup() {
  Serial.begin(9600);
  pinMode(10, OUTPUT);
  DDRD = 11111111;
  Serial.println("geef procent in");
}

void loop() {
  if (Serial.available() > 0) {
    
    inByte = Serial.parseInt();
    Dummy = Serial.parseInt();

    if (inByte < 50){ 
      PORTD = B00000000;   
      Serial.println("Onvoldoende");
      PORTD = B11000000;
    }
    else if ((50 <= inByte) && (inByte < 60)){
      PORTD = B00000000;
      Serial.println("Geslaagd");
      PORTD = B00100000;
    }
    else if ((60 <= inByte) && (inByte < 70)){
      PORTD = B00000000;
      Serial.println("Voldoende");
      PORTD = B00110000;
    }
    else if ((70 <= inByte) && (inByte < 80)){
      PORTD = B00000000;
      Serial.println("Goed gewerkt");
      PORTD = B00010000;
    }
    else if ((80 <= inByte) && (inByte < 90)){
      PORTD = B00000000;
      Serial.println("Zeer goed gewerkt");
      PORTD = B00011000;
    }
    else if (90 <= inByte){
      PORTD = B00000000;
    Serial.println("Schitterend gewerkt");
    PORTD = B00011100;
    tone(10, 262, 500);
    delay(500);
    tone(10, 196, 1000);
    delay(1000);
    tone(10, 196, 1000);
    delay(1000);
    tone(10, 220, 500);
    delay(500);
    tone(10, 296, 500);
    delay(500);
    tone(10, 0, 500);
    delay(500);
    tone(10, 247, 500);
    delay(500);
    tone(10, 262, 500);
    delay(500);
    }
  }
}