Update ex9_20.cpp

ch09/ex9_20.cpp

@@ -11,21 +11,18 @@
 #include <iostream>
 #include <deque>
 #include <list>
-
 using std::deque; using std::list; using std::cout; using std::cin; using std::endl;
 
 int main()
 {
-    list<int> l{1,2,3,4,5,6,7,8,9,10};
-    deque<int> d_odd, d_even;
-    for (auto iter = l.cbegin(); iter != l.cend(); ++iter)
-        (*iter & 0x1 ? d_odd : d_even).push_back(*iter);
+    list<int> l{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+    deque<int> odd, even;
+    for (auto i : l)
+        (i & 0x1 ? odd : even).push_back(i);
 
-    for (auto i : d_odd)
-        cout << i << " ";
+    for (auto i : odd) cout << i << " ";
     cout << endl;
-    for (auto i : d_even)
-        cout << i << " ";
+    for (auto i : even)cout << i << " ";
     cout << endl;
 
     return 0;