diff --git a/src/main.cpp b/src/main.cpp
index 0b2845d..feb3cab 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -17,6 +17,22 @@ bool check_faces_are_triangles(MyMesh &mesh) {
 }
 
 
+bool check_faces_arent_lonely(MyMesh &mesh) {
+	for (auto f_it = mesh.faces_begin(); f_it != mesh.faces_end(); ++f_it) {
+		auto ff_it = mesh.ff_iter(*f_it);
+		if (!ff_it.is_valid()) {
+			return false;
+		}
+	}
+	return true;
+}
+			return false;
+		}
+	}
+	return true;
+}
+
+
 int main(int argc, char *argv[]) {
 	using namespace std;
 
@@ -34,5 +50,14 @@ int main(int argc, char *argv[]) {
 		cout << "non";
 	}
 	cout << endl;
+
+	cout << "Les faces ont des voisines : ";
+	if (check_faces_arent_lonely(mesh)) {
+		cout << "oui";
+	}
+	else {
+		cout << "non";
+	}
+	cout << endl;
 	return 0;
 }