--- src/cppcomp.h
+++ src/cppcomp.h
@@ -122,6 +122,8 @@
 #define I_iomanip		<iomanip>
 #define I_ios			<ios>
 #define I_iostream		<iostream>
+#include <cstdlib>
+#include <cstring>
 
 #if (defined (_MSC_VER) && _MSC_VER >= 1100)
 // 1100 is version 5.0