diff --git a/exercice_2/src/dumper_series.cc b/exercice_2/src/dumper_series.cc
new file mode 100644
index 0000000..e4a798f
--- /dev/null
+++ b/exercice_2/src/dumper_series.cc
@@ -0,0 +1,5 @@
+#include "dumper_series.hh"
+
+DumperSeries::DumperSeries (Series & series) : series(series) {
+  
+}
diff --git a/exercice_2/src/dumper_series.hh b/exercice_2/src/dumper_series.hh
new file mode 100644
index 0000000..967309a
--- /dev/null
+++ b/exercice_2/src/dumper_series.hh
@@ -0,0 +1,10 @@
+#include "series.hh"
+
+class DumperSeries {
+public:
+  DumperSeries(Series & series);
+  virtual void dump() = 0;
+
+protected:
+  Series & series;
+};
diff --git a/exercice_2/src/main.cc b/exercice_2/src/main.cc
index 8695820..18443df 100644
--- a/exercice_2/src/main.cc
+++ b/exercice_2/src/main.cc
@@ -1,17 +1,17 @@
 /* created by Marti Bosch and Marc Schwaerzel*/
 /* -------------------------------------------------------------------------- */
-//#include "***.hh"
 #include <cstdlib>
 #include <iostream>
-#include "series.hh"
-#include "compute_arithmetic.cc"
-#include "compute_pi.cc"
-/* -------------------------------------------------------------------------- */
+#include <memory>
+
+#include "compute_arithmetic.hh"
+#include "print_series.hh"
 
+/* -------------------------------------------------------------------------- */
 
-int main(){
-	std::cout<< "exercice 2" << std::endl;
-	
+int main() {
+  ComputeArithmetic comparith;
+  PrintSeries printseries(comparith, 100, 10);
 
-	  
+  return EXIT_SUCCESS;
 }
diff --git a/exercice_2/src/print_series.cc b/exercice_2/src/print_series.cc
new file mode 100644
index 0000000..b89966d
--- /dev/null
+++ b/exercice_2/src/print_series.cc
@@ -0,0 +1,11 @@
+#include <iostream>
+#include "print_series.hh"
+
+PrintSeries::PrintSeries (Series & series, unsigned int maxiter, unsigned int frequency) : DumperSeries(series), maxiter(maxiter), frequency(frequency) {
+
+}
+
+void PrintSeries::dump() {
+  for (int i=1; i <= this->maxiter; i += this->frequency)
+    std::cout << this->series.compute(i) << std::endl;
+}
diff --git a/exercice_2/src/print_series.hh b/exercice_2/src/print_series.hh
new file mode 100644
index 0000000..1201122
--- /dev/null
+++ b/exercice_2/src/print_series.hh
@@ -0,0 +1,11 @@
+#include "dumper_series.hh"
+
+class PrintSeries : public DumperSeries {
+public:
+  PrintSeries(Series & series, unsigned int maxiter, unsigned int frequency);
+  virtual ~PrintSeries();
+  void dump();
+protected:
+  unsigned int maxiter;
+  unsigned int frequency;
+};