X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=mtp.git;a=blobdiff_plain;f=mtp.cc;fp=mtp.cc;h=15d0e083eb00ca5a4df6a9b7be964baa5a4e88eb;hp=e749b671681b0c0c53a9fefe8817abcd05105a33;hb=115051461c429783c8c0a38ade99538b7891a7c4;hpb=0a78398c86517c7c6224bd8f4f1b3950fed245b9

diff --git a/mtp.cc b/mtp.cc
index e749b67..15d0e08 100644
--- a/mtp.cc
+++ b/mtp.cc
@@ -120,7 +120,7 @@ void do_tracking(istream *in_tracker) {
     cout << "done (" << diff_in_second(&start_time, &end_time) << "s)." << endl;
   }
 
-  if(strcmp(global.trajectory_filename, "")) {
+  if(global.trajectory_filename[0]) {
     ofstream out_traj(global.trajectory_filename);
     tracker->write_trajectories(&out_traj);
     if(global.verbose) { cout << "Wrote " << global.trajectory_filename << "." << endl; }
@@ -128,7 +128,7 @@ void do_tracking(istream *in_tracker) {
     tracker->write_trajectories(&cout);
   }
 
-  if(strcmp(global.graph_filename, "") != 0) {
+  if(global.graph_filename[0]) {
     ofstream out_dot(global.graph_filename);
     tracker->print_graph_dot(&out_dot);
     if(global.verbose) { cout << "Wrote " << global.graph_filename << "." << endl; }