#include <wiringPi.h>
#include <stdio.h>
#include <stdbool.h>
void blink(int pin) {
  digitalWrite (pin, HIGH);
  delay (500);
  digitalWrite (pin,  LOW);
  delay (500);
}
int main(){
  wiringPiSetup();
  int i;
  while(true){
    printf("Write pin: ");
    scanf("%d", &i);
    pinMode (i, OUTPUT);
    printf("Blinking: (%d)\n", i);
    blink(i);
    blink(i);
  }
  return 0;
}