+int main(int argc, char **argv) {
+ int c;
+ int error = 0, show_help = 0;
+
+ strncpy(trajectory_filename, "", FILENAME_SIZE);
+ strncpy(graph_filename, "", FILENAME_SIZE);
+ verbose = 0;
+
+ while ((c = getopt_long(argc, argv, "t:g:hv",
+ long_options, NULL)) != -1) {
+
+ switch(c) {
+
+ case 't':
+ strncpy(trajectory_filename, optarg, FILENAME_SIZE);
+ break;
+
+ case 'g':
+ strncpy(graph_filename, optarg, FILENAME_SIZE);
+ break;