Error(s):

source_file.cpp:9:18: error: expected ')'
inline void and(C& s);
                 ^
source_file.cpp:9:16: note: to match this '('
inline void and(C& s);
               ^
source_file.cpp:9:13: error: cannot form a reference to 'void'
inline void and(C& s);
            ^
source_file.cpp:9:1: error: 'inline' can only appear on functions
inline void and(C& s);
^
3 errors generated.