diff --git a/librerie/exercise2/main b/librerie/exercise2/main
index 8fee996..7ad6b62 100755
Binary files a/librerie/exercise2/main and b/librerie/exercise2/main differ
diff --git a/librerie/exercise2/main.cpp b/librerie/exercise2/main.cpp
index f16a768..a25e136 100755
--- a/librerie/exercise2/main.cpp
+++ b/librerie/exercise2/main.cpp
@@ -19,7 +19,7 @@
 
 int main() {
   std::cout << "Lasd Libraries 2020" << std::endl;
-  lasdtest(); // To call in the menu of your library test!
-  //menu();
+  lasdtest();
+  menu();
   return 0;
 }
diff --git a/librerie/exercise2/queue/lst/queuelst.cpp b/librerie/exercise2/queue/lst/queuelst.cpp
index 41a13df..9153b80 100755
--- a/librerie/exercise2/queue/lst/queuelst.cpp
+++ b/librerie/exercise2/queue/lst/queuelst.cpp
@@ -1,27 +1,17 @@
 
 namespace lasd {
 
-/* ************************************************************************** */
 template <typename Data>
-QueueLst<Data>::QueueLst(const LinearContainer<Data>& linear){
-  for(ulong i=0; i<linear.Size() ; ++i){
-    Enqueue(linear[i]);
-  }
-}
+QueueLst<Data>::QueueLst(const LinearContainer<Data>& linear)
+  : List<Data>(linear) {}
 
 template <typename Data>
-QueueLst<Data>::QueueLst(const QueueLst& copyFrom){
-  for(ulong i=0; i<copyFrom.Size() ; ++i){
-    Enqueue(copyFrom[i]);
-  }
-}
+QueueLst<Data>::QueueLst(const QueueLst& copyFrom)
+  : List<Data>(copyFrom) {}
 
 template <typename Data>
-QueueLst<Data>::QueueLst(QueueLst&& moveFrom) noexcept{
-    std::swap(head,moveFrom.head);
-    std::swap(tail,moveFrom.tail);
-    std::swap(size,moveFrom.size);
-}
+QueueLst<Data>::QueueLst(QueueLst&& moveFrom) noexcept
+  : List<Data>(std::move(moveFrom)) {}
 
 template <typename Data>
 QueueLst<Data>::~QueueLst(){
@@ -30,11 +20,6 @@ QueueLst<Data>::~QueueLst(){
 
 template <typename Data>
 QueueLst<Data>& QueueLst<Data>::operator=(const QueueLst& toCopy){
-  // QueueLst<Data>* tmp = new QueueLst<Data>(toCopy);
-  // std::swap(*this, *tmp);
-  // delete tmp;
-  // return *this;
-
   List<Data>::operator=(toCopy);
   return *this;
 }
@@ -62,7 +47,7 @@ template <typename Data>
 
 template <typename Data>
 void QueueLst<Data>::Enqueue(Data&& data){
-    List<Data>::InsertAtBack(data);
+    List<Data>::InsertAtBack(std::move(data));
   }
 
 template <typename Data>
@@ -84,6 +69,5 @@ template <typename Data>
 void QueueLst<Data>::Clear(){
   List<Data>::Clear();
 }
-/* ************************************************************************** */
 
 }
diff --git a/librerie/exercise2/queue/vec/queuevec.cpp b/librerie/exercise2/queue/vec/queuevec.cpp
index 1087e79..1b96485 100755
--- a/librerie/exercise2/queue/vec/queuevec.cpp
+++ b/librerie/exercise2/queue/vec/queuevec.cpp
@@ -1,7 +1,6 @@
 
 namespace lasd {
 
-/* ************************************************************************** */
 template <typename Data>
 QueueVec<Data>::QueueVec(){
   size = 4;
@@ -12,7 +11,7 @@ QueueVec<Data>::QueueVec(){
 
 template <typename Data>
 QueueVec<Data>::QueueVec(const LinearContainer<Data>& linear){
-  size = linear.Size()+1;
+  size = linear.Size()+1; // 1 free cell
   Elements = new Data[size]; //forse da espandere
   for(ulong i=0 ; i<linear.Size() ; ++i){
     Elements[i] = linear[i];
@@ -38,10 +37,8 @@ QueueVec<Data>::QueueVec(const QueueVec& toCopy){
 
 template <typename Data>
 QueueVec<Data>::QueueVec(QueueVec&& toMove) noexcept{
-    /*
-      we initialize size=4 so the swapped vector won't be in an
-      inconsistent state (size=0 can never be accettable)
-    */
+    /* we initialize size=4 so the swapped vector won't be in an
+      inconsistent state (size=0 can never be acceptable) */
     size = 4;
     std::swap(Elements, toMove.Elements);
     std::swap(rear, toMove.rear);
@@ -51,7 +48,7 @@ QueueVec<Data>::QueueVec(QueueVec&& toMove) noexcept{
 
 template <typename Data>
 QueueVec<Data>::~QueueVec(){
-  //vector destructor will be called automatically i hope
+  //vector destructor will be automatically called I hope
 }
 
 template <typename Data>
@@ -64,6 +61,8 @@ QueueVec<Data>& QueueVec<Data>::operator=(const QueueVec& toCopy){
 
 template <typename Data>
 QueueVec<Data>& QueueVec<Data>::operator=(QueueVec&& toMove) noexcept{
+  /* here we do not need size=4 since the QueueVec with at least size=4
+  exists already */
   std::swap(Elements, toMove.Elements);
   std::swap(size, toMove.size);
   std::swap(rear, toMove.rear);
@@ -115,7 +114,7 @@ void QueueVec<Data>::Enqueue(Data&& data){
 template <typename Data>
 Data& QueueVec<Data>::Head() const{
   if(Size()<=0){
-    throw std::length_error("Queuevec is empty!");
+    throw std::length_error("Queue is empty!");
   }
   return Elements[front];
 }
@@ -123,7 +122,7 @@ Data& QueueVec<Data>::Head() const{
 template <typename Data>
 void QueueVec<Data>::Dequeue(){
   if(Size() <= 0){
-    throw std::length_error("Queuevec is empty!");
+    throw std::length_error("Queue is empty!");
   }
   front = (front + 1) % size;
   if(Size() < size/4){
@@ -192,6 +191,5 @@ void QueueVec<Data>::Reduce(){
   rear = i;
   size *= 2;
 }
-/* ************************************************************************** */
 
 }
diff --git a/librerie/exercise2/stack/lst/stacklst.cpp b/librerie/exercise2/stack/lst/stacklst.cpp
index 5835396..f1f24d8 100755
--- a/librerie/exercise2/stack/lst/stacklst.cpp
+++ b/librerie/exercise2/stack/lst/stacklst.cpp
@@ -5,34 +5,16 @@ namespace lasd {
 
 // Constructors
 template <typename Data>
-StackLst<Data>::StackLst(const LinearContainer<Data>& linear){
-  for(long int i=(long int)linear.Size()-1 ; i>=0 ; --i){ // è possibile usare il costruttore di List?
-    Push(linear[i]);
-  }
-}
-/*
-PROVARE
-template <typename Data>
-StackLst(const LinearContainer<Data>& linear) : List<Data>(linear){
-return;
-}
-*/
-template <typename Data>
-StackLst<Data>::StackLst(const StackLst& stcklist){
-for(long int i=(long int)stcklist.Size()-1 ; i>=0 ; i--){
-    Push(stcklist[i]);
-  }
-}
-/*
-PROVARE
-StackLst(const StackLst& stcklist) : List<Data>(stcklist){}
-*/
+StackLst<Data>::StackLst(const LinearContainer<Data>& linear)
+  : List<Data>(linear){}
 
 template <typename Data>
-StackLst<Data>::StackLst(StackLst&& stcklist) noexcept{
-    std::swap(size, stcklist.size);
-    std::swap(head, stcklist.head);
-}
+StackLst<Data>::StackLst(const StackLst& stcklist)
+  : List<Data>(stcklist){}
+
+template <typename Data>
+StackLst<Data>::StackLst(StackLst&& stcklist) noexcept
+  : List<Data>(std::move(stcklist)){}
 
 // Destructor
 template <typename Data>
@@ -42,19 +24,13 @@ StackLst<Data>::~StackLst(){
 
 template <typename Data>
 StackLst<Data>& StackLst<Data>::operator=(const StackLst& copyFrom){
-  if(*this != copyFrom){
-    Clear();
-    for(long int i=(long int)copyFrom.Size()-1 ; i>=0 ; --i){
-      Push(copyFrom[i]);
-    }
-  }
+  List<Data>::operator=(copyFrom);
   return *this;
 }
 
 template <typename Data>
 StackLst<Data>& StackLst<Data>::operator=(StackLst&& moveFrom) noexcept{
-  std::swap(size, moveFrom.size);
-  std::swap(head, moveFrom.head);
+  List<Data>::operator=(std::move(moveFrom));
   return *this;
 }
 
diff --git a/librerie/exercise2/stack/vec/stackvec.cpp b/librerie/exercise2/stack/vec/stackvec.cpp
index fa9e735..f2471af 100755
--- a/librerie/exercise2/stack/vec/stackvec.cpp
+++ b/librerie/exercise2/stack/vec/stackvec.cpp
@@ -10,6 +10,12 @@ StackVec<Data>::StackVec(){
   Elements = new Data[size];
 }
 
+template <typename Data>
+StackVec<Data>::StackVec(const LinearContainer<Data>& linear)
+  : Vector<Data>(linear){
+  stackSize = linear.Size(); // the array is full
+}
+/*
 template <typename Data>
 StackVec<Data>::StackVec(const LinearContainer<Data>& linear){ // si può richiamare il costruttore della classe Vector
   Elements = new Data[linear.Size()]; // espandere di un po' forse
@@ -19,6 +25,7 @@ StackVec<Data>::StackVec(const LinearContainer<Data>& linear){ // si può richia
   size = linear.Size();
   stackSize = linear.Size();
 }
+*/
 
 template <typename Data>
 StackVec<Data>::StackVec(const StackVec& stckvec){// si può richiamare il costruttore della classe Vector
diff --git a/librerie/exercise2/zmytest/test.cpp b/librerie/exercise2/zmytest/test.cpp
index 8b1375e..d590012 100755
--- a/librerie/exercise2/zmytest/test.cpp
+++ b/librerie/exercise2/zmytest/test.cpp
@@ -2,56 +2,131 @@
 #include<iostream>
 #include<random>
 #include "../zlasdtest/test.hpp"
+
 using namespace lasd;
 
 void menu(){
-/*
-  QueueVec<int> q1;
-  q1.Enqueue(4);
-  q1.Enqueue(0);
-  q1.Enqueue(3);
-  q1.Enqueue(1);
-  q1.Enqueue(2);
-  q1.HeadNDequeue();
-  q1.Enqueue(5);
-
-  QueueVec<int> q2;
-  q2 = std::move(q1);
-
-  QueueVec<int> q3(std::move(q1));
-  std::cout<<q1.Head();
+  /*
+      !!! BUG !!!
   */
-  QueueLst<int> q1;
-  q1.Enqueue(4);
-  q1.Enqueue(0);
-  q1.Enqueue(3);
-  q1.Enqueue(1);
-  q1.Enqueue(2);
+  /*
+  Vector<int> v(5);
+  v[0] = 0;
+  v[1] = 1;
+  v[2] = 2;
+  v[3] = 3;
 
-  // QueueLst<int>* tmp = new QueueLst<int>(q1);
-  // (*tmp).HeadNDequeue();
-  // (*tmp).HeadNDequeue();
-  // (*tmp).HeadNDequeue();
-  // (*tmp).HeadNDequeue();
-  // (*tmp).HeadNDequeue();
+  StackVec<int> sv;
+  sv.Push(0);
+  sv.Push(1);
+  sv.Push(2);
+  sv.Push(3);
 
+  StackVec<int> sv2(sv);
 
+  if(sv2 == v) std::cout<<"OK";
+  else std::cout<<"NO";
+*/
 
-  // QueueLst<int> q2;
-  // q2 = std::move(q1);
-  //
-  // q2.HeadNDequeue();
-  // q2.HeadNDequeue();
-  // q2.HeadNDequeue();
-  // q2.HeadNDequeue();
-  // q2.HeadNDequeue();
-
-
-  QueueVec<int> quevec;
-  quevec.Enqueue(0);
-  quevec.Enqueue(1);
-  QueueVec<int> newquevec = quevec;
-
-  if(quevec == newquevec) std::cout<<"uguali";
+ QueueLst<int> q;
+ int a =3;
+ q.Enqueue(std::move(a));
 
 }
+
+/*
+void menu(){
+
+
+  unsigned short int choice;
+  DataStructure chosenDataStructure;
+  DataType chosenDataType;
+  Implementation chosenImplementation;
+  do{
+    std::cout<<"1. Use your tests (to be used by the professor)"<<std::endl;
+    std::cout<<"2. Use the library demo"<<std::endl;
+    std::cin>>std::ws;
+    std::cin>>choice;
+  }while(choice!=1 && choice!=2);
+  switch(choice){
+    case 1:
+      lasdtest();
+      break;
+    case 2:
+      chosenDataStructure = ChooseDataStructure();
+      chosenDataType = ChooseDataType();
+      chosenImplementation = ChooseImplementation();
+      UseChosenType(chosenDataStructure,chosenDataType, chosenImplementation);
+      break;
+    default:
+      std::cout<<"An error has occurred"<<std::endl;
+      return;
+  }
+}
+DataStructure ChooseDataStructure(){
+  unsigned short int choice;
+  do{
+    std::cout<<"Choose a data structure:"<<std::endl;
+    std::cout<<"1. Stack"<<std::endl;
+    std::cout<<"2. Queue"<<std::endl;
+    std::cin>>std::ws;
+    std::cin>>choice;
+  }while(choice!=1 && choice!=2);
+  if(choice == 1)
+    return DataStructure::stack;
+  else if(choice == 2)
+    return DataStructure::queue;
+}
+DataType ChooseDataType(){
+  unsigned short int choice;
+  do{
+    std::cout<<"Choose a data type:"<<std::endl;
+    std::cout<<"1. Integer"<<std::endl;
+    std::cout<<"2. Float"<<std::endl;
+    std::cout<<"3. String"<<std::endl;
+    std::cin>>std::ws;
+    std::cin>>choice;
+  }while(!(choice>0 && choice<4));
+  if(choice==1)
+    return DataType::integer;
+  else if(choice==2)
+    return DataType::ffloat;
+  else if(choice==3)
+    return DataType::sstring;
+}
+Implementation ChooseImplementation(){
+  unsigned short int choice;
+  do{
+    std::cout<<"Choose an implementation:"<<std::endl;
+    std::cout<<"1. Vector"<<std::endl;
+    std::cout<<"2. List"<<std::endl;
+    std::cin>>std::ws;
+    std::cin>>choice;
+  }while(!(choice>0 && choice<4));
+  if(choice==1)
+    return Implementation::vector;
+  else if(choice==2)
+    return Implementation::list;
+}
+
+void UseChosenType(DataStructure chosenDataStructure, DataType chosenDataType, Implementation chosenImplementation){
+  if(chosenDataStructure == DataStructure::stack){
+    if(chosenImplementation == Implementation::vector){
+      if(chosenDataType == DataType::integer){
+        lasd::StackVec<int> myvec;
+        myvec = generateVectorOfIntegers();
+        VectorIntegerFunctions(myvec);
+      }else if(chosenDataType == DataType::ffloat){
+        lasd::StackVec<float> myvec;
+        myvec = generateVectorOfFloat();
+        VectorFloatFunctions(myvec);
+      }else if(chosenDataType == DataType::sstring){
+        lasd::StackVec<std::string> myvec;
+        myvec = generateVectorOfStrings();
+        VectorStringFunctions(myvec);
+      }
+    }
+  }
+
+}
+*/
diff --git a/librerie/exercise2/zmytest/test.hpp b/librerie/exercise2/zmytest/test.hpp
index a9b4a24..cd36c25 100755
--- a/librerie/exercise2/zmytest/test.hpp
+++ b/librerie/exercise2/zmytest/test.hpp
@@ -11,8 +11,13 @@
 #include"../stack/lst/stacklst.hpp"
 #include"../stack/vec/stackvec.hpp"
 /* ************************************************************************** */
-
+enum class DataStructure{stack,queue};
+enum class DataType{integer,ffloat,sstring};
+enum class Implementation{vector,list};
 void menu();
+DataType ChooseDataType(); //choose data type
+DataStructure ChooseDataStructure();
+void UseChosenType(DataStructure, DataType);
 
 /* ************************************************************************** */
 #include"test.cpp"