Diff of /pp/common_option.cpp [af7e83] .. [a4c754] Maximize Restore

  Switch to side-by-side view

--- a/pp/common_option.cpp
+++ b/pp/common_option.cpp
@@ -8,6 +8,8 @@
  *
  * @author Philippe Elie
  */
+
+#include <cstdlib>
 
 #include <iostream>
 #include <sstream>