int state=0; 
void setup() {
// put your setup code here, to run once:
pinMode(3,OUTPUT);
pinMode(2,INPUT);
pinMode(7,OUTPUT);
pinMode(8,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
state = digitalRead(2);
if (state==1) {
digitalWrite(3,HIGH);
digitalWrite(7,HIGH);
digitalWrite(8,HIGH);
}
else
{
digitalWrite(3,LOW);
digitalWrite(8,LOW);
digitalWrite(7,LOW);
}
}