void setup() {
Serial.begin(9600);  
Serial.println("welcome");
pinMode(7, INPUT_PULLUP);
pinMode(8,OUTPUT);  // put your setup code here, to run once:
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);

}

void loop() {
  Serial.println("Roll:");
  while(digitalRead(13)==1)
  {

  }
  int x=random(1,6);
  Serial.println("output"); 
  Serial.println(x);
  digitalWrite(x+7, HIGH);
  delay(1000);
  digitalWrite(x+7, LOW);
  // put your main code here, to run repeatedly:

}