1 files changed, 11 insertions, 3 deletions
diff --git a/src/Persistent_cohomology/example/plain_homology.cpp b/src/Persistent_cohomology/example/plain_homology.cpp
index 0a692717..2156ffd9 100644
--- a/src/Persistent_cohomology/example/plain_homology.cpp
+++ b/src/Persistent_cohomology/example/plain_homology.cpp
@@ -24,6 +24,7 @@
 #include <gudhi/Persistent_cohomology.h>
 
 #include <iostream>
+#include <vector>
 
 using namespace Gudhi;
 
@@ -76,9 +77,16 @@ int main() {
 
   // Print the result. The format is, on each line: 2 dim 0 inf
   // where 2 represents the field, dim the dimension of the feature.
-  // 2  0 0 inf 
-  // 2  0 0 inf 
-  // 2  1 0 inf 
+  // 2  0 0 inf
+  // 2  0 0 inf
+  // 2  1 0 inf
   // means that in Z/2Z-homology, the Betti numbers are b0=2 and b1=1.
   pcoh.output_diagram();
+
+  // Print the Betti numbers are b0=2 and b1=1.
+  std::cout << std::endl;
+  std::cout << "The Betti numbers are : ";
+  for (int i = 0; i < st.dimension(); i++)
+    std::cout << "b" << i << " = " << pcoh.betti_number(i) << " ; ";
+  std::cout << std::endl;
 }