Help with many errors on a code

I need help in this code:

int ESTADO = 0;

void setup(){
  Serial.begin(9600);
  pinMode( 13, OUTPUT);
}

void loop(){
  if(Serial.available()>0)(
  ESTADO= Serial.read();
  )
  if (ESTADO == "1")(
    digitalWrite( 13, HIGH );
  )

  if (ESTADO == "2")(
    digitalWrite( 13, LOW );
  )
}

When I try to verify it in Arduino IDE it shows errors like those ones:

In function 'void loop()':

sketch_mar16a:10:24: error: expected ')' before ';' token

sketch_mar16a:11:3: error: expected primary-expression before ')' token

sketch_mar16a:14:3: error: expected primary-expression before ')' token

sketch_mar16a:18:3: error: expected primary-expression before ')' token

exit status 1
expected ')' before ';' token

if (ESTADO == "1")ESTADO is NOT a String.
Lose the double quotes and use single quotes.

As to your other errors, use { }, not ( )

Thank you :smiley: