int state=0;
void setup() {
  // put your setup code here, to run once:
pinMode(13, INPUT);
pinMode(12, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
state=digitalRead(13);
if(state==1)
{
  digitalWrite(12, HIGH);
}
else
{
  digitalWrite(12, LOW);
}
}