read-file.c

#include <stdio.h>
#include <stdlib.h>

enum { MAX_READ_BYTES = 1024 };

int main(void) {
  FILE *f = fopen("data.txt");
  char buffer[MAX_READ_BYTES];
  char *ret;

  /* Get rid of file header. */
  ret = fgets(buffer, MAX_READ_BYTES, f);
  assert(ret == buffer);

  while (fgets(buffer, MAX_READ_BYTES, f) != NULL) {
    int num = /* something */;
    particle *event_data = particle_init(num);
    read_event_data(event_data, buffer);
    particle_free(event_data);
  }

  fclose(f);
}