fixed iterators and iterator usage

src/test.cc

@@ -1,25 +1,29 @@
 #include "list.hh"
 #include "vector.hh"
-#include <cstdio>
+#include <iostream>
 
 using namespace phundrak;
+using std::cout;
 
 int main(void) {
 
-  printf("Hello 1!\n");
   list<char> test {'C', 'a', 'r', 't', 'i', 'e', 'r'};
-  printf("Hello !\n");
 
-  for(auto c : test) {
-    printf("%c\n", c);
-  }
+  for(auto c : test)
+    cout << c << "  ";
+
+  cout << "\n";
 
   list<int> test_unique {1,1,1,1,1,2,2,2,3,3,3,4,4,1,1,5,1,2,1,1,3,3,3};
   printf("Elements before unique():\n");
   for(const auto& elem : test_unique)
-    printf("%2d,", elem);
+    cout << elem << "  ";
 
+  cout << "\n";
   test_unique.unique();
+  for(const auto& elem : test_unique)
+    cout << elem << "  ";
+  cout << "\n";
 
   return 0;
 }