(list)+some flavour text for list program output

list.cpp

@@ -96,15 +96,28 @@ std::ostream& operator<<(std::ostream& ostream, const List<T> *lst)
 
 int main(void)
 {
+  puts("Create linked list with 1..10");
   auto lst = append<int>(nullptr, 1);
-  for (int i = 2; i < 10; ++i)
+  for (int i = 2; i <= 10; ++i)
     lst = append(lst, i);
+  printf("Current output for list: ");
   std::cout << lst << std::endl;
   lst = reverse(lst);
+  printf("Reverse list: ");
   std::cout << lst << std::endl;
+  puts("Reverse list again...");
+  printf("Map list with f(x) = 2x: ");
   map<int, int>(lst = reverse(lst), [](int x){ return x * 2; });
   std::cout << lst << std::endl;
-  std::cout << reduce<int>(lst, [](int a, int b) { return a + b; }, 0) << std::endl;
+  puts("Reverse map...");
+  map<int, int>(lst, [](int x){ return x / 2; });
+  printf("Sum all numbers in list: ");
+  std::cout << reduce<int>(lst, [](int a, int b) { return a + b; }, 0)
+            << std::endl;
+  printf("Print all even numbers 1..10: ");
+  auto evens = filter<int>(lst, [](int a) { return a % 2 == 0; });
+  std::cout << evens << std::endl;
   delete lst;
+  delete evens;
   return 0;
 }