--- id3lib-3.8.3/examples/test_io.cpp.old 2003-03-02 00:23:00.000000000 +0000 +++ id3lib-3.8.3/examples/test_io.cpp 2018-03-25 19:10:54.891043851 +0000 @@ -11,6 +11,9 @@ #include <id3/io_strings.h> #include <id3/utils.h> +using std::cin; +using std::dec; +using std::hex; using std::cout; using std::endl; using std::cerr;