diff --git a/exercice_2/src/main.cc b/exercice_2/src/main.cc
index 0870608..49af90b 100644
--- a/exercice_2/src/main.cc
+++ b/exercice_2/src/main.cc
@@ -1,51 +1,51 @@
 /* created by Marti Bosch and Marc Schwaerzel*/
 /* -------------------------------------------------------------------------- */
 #include <cstdlib>
+#include <stdlib.h>
 #include <iostream>
 #include <sstream>
 
 #include "compute_arithmetic.hh"
 #include "compute_pi.hh"
 #include "print_series.hh"
 #include "series.hh"
+
+using namespace std;
 /* -------------------------------------------------------------------------- */
 
 int main(int argc, char **argv) {
-  std::cout << "exercice 2" << std::endl;
-
-  /* std::cout << "please enter the following arguments: frequence, maxiter, "
-               "serie_type= #"
-            << std::endl;
-  const char *series_type;
-  int maxiter;
-  int ferquency;
+  	cout << "exercice 2" << endl;
+	cout << "please enter the following arguments: serie_type(1=arithmetic, 2=pi), maxiter" << endl;
 
-  if (argc != 3) {
+if (argc != 3) {
 
-    std::cout << "retry with arg: frequence, maxiter, serie_type=pi/arithmetic"
+    std::cout << "\nincorrect number of input arguments\n"
               << std::endl;
 
     return EXIT_FAILURE;
   }
 
-  Series *input_series_type;
 
-   if (series_type == "arithmetic"){
+int serie_type = atoi(argv[1]);
+int N = atoi(argv[2]);
 
-    input_series_type = new ComputeArithmetic();
+Series* my_object;  
 
-  }
-  else if (series_type == "pi"){
+if (serie_type == 1){
+		my_object = new ComputeArithmetic();
+		cout <<"I compute arithmetic"<< endl;
+	}
+else if (serie_type == 2){
+		my_object = new ComputePi();
+		cout <<"\nI compute pi"<< endl;
+	}
+
+double res = my_object->compute(N);
+cout << "result for test for ex 2.6:\t" << res <<endl;
+delete my_object;
 
-    input_series_type = new ComputePi();
 
-  }
-  else{std::cout << "input error"<< std::endl;
-  }*/
-  ComputeArithmetic comparith;
-	ComputePi comp;
-	std::cout<<comp.compute(3)<<std::endl;
 
-  PrintSeries printseries(comparith, 100, 10);
 
 }
+