#include <cstdlib>
#include <cstring>
#include <ctime>
-#include <ctype.h>
+#include <cctype>
+#include <cerrno>
+#include <climits>
#else
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
+#include <errno.h>
+#include <limits.h>
#endif
-#include <errno.h>
#include <fcntl.h>
-#include <limits.h>
#include <sys/types.h>
#include <unistd.h>