i don´t have any idea of coding but i´m doing a school exersice and it gives me the error of the title
while (distancia<200 && distancia>100);
{
  lcd.print("ALTO");
  delay(1000);
  lcd.clear();
  delay(1000);
  if(distancia<100)
  {
   break;
  }
}
 if(distancia<100);
  {
    lcd.print("INTRUSO EN");
    lcd.setCursor(0,1);
    lcd.print("LA PUERTA");
    tone(11,700,250);
    digitalWrite(8,HIGH);
    delay(500);
    lcd.clear();
    digitalWrite(8,LOW);
    delay(500);
}
}
It is in arduino and I want that it returns to the first while if (100<distancia) and that ("ALTO") disapear when (distancia<100), pls help, I have no idea of what I´m doing
 
                        
Here
remove that semicolon, it terminates the
whileright there