Make and run a library

Projects Programming
7

I Think I reached a dead end for this sketch today.
below is my final code and I did not receive any thing at all from the serial monitor .

Any help ?

#include <spa.h>


spa_data spa;  //declare the SPA structure
int result;
float min;
float sec;

void setup()
{  
  Serial.begin(9600);
}
void loop()
{
  spa.year          = 2003;
  spa.month         = 10;
  spa.day           = 17;
  spa.hour          = 12;
  spa.minute        = 30;
  spa.second        = 30;
  spa.timezone      = -7.0;
  spa.delta_t       = 67;
  spa.longitude     = -105.1786;
  spa.latitude      = 39.742476;
  spa.elevation     = 1830.14;
  spa.pressure      = 820;
  spa.temperature   = 11;
  spa.slope         = 30;
  spa.azm_rotation  = -10;
  spa.atmos_refract = 0.5667;
  spa.function      = SPA_ALL;

  result = spa_calculate(&spa);


  if (result == 0) {
    Serial.print ("Julian Day:    ");
    Serial.println(spa.jd);
  }
  else
  {
    Serial.print ("SPA Error Code:    ");
    Serial.println(result); 
  }

  delay(10000);
}