#include <stdio.h>
#include "prog03header.h"

int read_planets(Planet *planets) {
  int i;
  FILE *fp;
    
  if( (fp = fopen("planet.txt", "r")) == NULL ){
    return -1;
  }
  
  for (i = 0; i < NPLANETS; i++) {
    if( fscanf(fp, "%s %lf %lf %lf", planets[i].name, &planets[i].radius, &planets[i].density, &planets[i].semi_major_axis) != 4 ) {
      fclose(fp);
      return -1;
    }
  }
  
  fclose(fp);
  return 0;
}