Student question on if statement not working

greetings:

i trying build "knight rider" type led setup.

i want increase it's delay increments certian point , have reset it's original delay.

as have now, goes in 1 direction , slow in other.

int timer = 100;

void setup(){
  (int ledpin = 2; ledpin <8; ledpin++){     //sets each pin output , named ledpin
    pinmode (ledpin, output);
  }
}
void loop(){
  (int ledpin = 2; ledpin <8; ledpin++){     //loops ledpin lowest highest
  digitalwrite (ledpin, high);    //ledpin on
  delay(timer);
  digitalwrite(ledpin, low);     //ledpin off
  }
  for(int ledpin = 7; ledpin >=2; ledpin--){     //loops ledpin highest lowest
     digitalwrite(ledpin, high);     //ledpin on
     delay(timer);
     digitalwrite(ledpin, low);
 
    timer = timer + 100;
  }
    { if(timer>=700);
     {
      timer=100;
  }
    }
}

code: [select]

if(timer>=700);
the semicolon not belong @ end of if statement.  semicolon ends statement , next statement executed unconditionally.

please read "how use forum" stickies see how format , post code.

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