why is "if " statement not working?

Projects Programming
1

hay guys
i know i must be doing something stupid here but for the life of me, i can't see it.
The action in the IF statement seems to b activated every cycal although the condition isnt being met! what am i missing here?

thanks

int inc = 20; 


void setup() {
}

void loop()
{
   for (int i =40; i<1000 ; i=i+inc){


if (i<=0 || i >= 1000);{
  (inc = -inc);
}
Serial.print("i =   ");
Serial.println(i);
Serial.print("inc = ");
Serial.println(inc);
delay(10);
}
}
2 
if (i<=0 || i >= 1000);{

the ; should not be there

3

Lose the semicolon at the end of the if staement. A semicolon there ends the if.

4

thanks guys

5

I'm curious about why you even have that if statement there to begin with, since it will never be true inside that for loop.

6

And you also missed initializing the serial monitor. Add "Serial.begin(9600);" in void setup().

7

You also might start using the IDE Tools->Autoformat from time to time. It would have given you a clue about that ;.