1 files changed, 15 insertions, 14 deletions
diff --git a/src/Alpha_complex/example/Alpha_complex_3d_from_points.cpp b/src/Alpha_complex/example/Alpha_complex_3d_from_points.cpp
index dd3c0225..a2c85138 100644
--- a/src/Alpha_complex/example/Alpha_complex_3d_from_points.cpp
+++ b/src/Alpha_complex/example/Alpha_complex_3d_from_points.cpp
@@ -34,22 +34,23 @@ int main(int argc, char **argv) {
   Alpha_complex_3d alpha_complex_from_points(points);
 
   Gudhi::Simplex_tree<> simplex;
-  alpha_complex_from_points.create_complex(simplex);
-  // ----------------------------------------------------------------------------
-  // Display information about the alpha complex
-  // ----------------------------------------------------------------------------
-  std::clog << "Alpha complex is of dimension " << simplex.dimension() << " - " << simplex.num_simplices()
-            << " simplices - " << simplex.num_vertices() << " vertices." << std::endl;
+  if (alpha_complex_from_points.create_complex(simplex)) {
+    // ----------------------------------------------------------------------------
+    // Display information about the alpha complex
+    // ----------------------------------------------------------------------------
+    std::clog << "Alpha complex is of dimension " << simplex.dimension() << " - " << simplex.num_simplices()
+              << " simplices - " << simplex.num_vertices() << " vertices." << std::endl;
 
-  std::clog << "Iterator on alpha complex simplices in the filtration order, with [filtration value]:" << std::endl;
-  for (auto f_simplex : simplex.filtration_simplex_range()) {
-    std::clog << "   ( ";
-    for (auto vertex : simplex.simplex_vertex_range(f_simplex)) {
-      std::clog << vertex << " ";
+    std::clog << "Iterator on alpha complex simplices in the filtration order, with [filtration value]:" << std::endl;
+    for (auto f_simplex : simplex.filtration_simplex_range()) {
+      std::clog << "   ( ";
+      for (auto vertex : simplex.simplex_vertex_range(f_simplex)) {
+        std::clog << vertex << " ";
+      }
+      std::clog << ") -> "
+                << "[" << simplex.filtration(f_simplex) << "] ";
+      std::clog << std::endl;
     }
-    std::clog << ") -> "
-              << "[" << simplex.filtration(f_simplex) << "] ";
-    std::clog << std::endl;
   }
   return 0;
 }