View Compilation Error

0_0_31968015_24408.cpp:150:16: error: declaration of 'operator+' as non-function
  void operator +%
                ^
0_0_31968015_24408.cpp:150:16: error: expected ';' at end of member declaration
0_0_31968015_24408.cpp:150:17: error: expected unqualified-id before '%' token
  void operator +%
                 ^
0_0_31968015_24408.cpp:150:17: error: expected '}' at end of input
0_0_31968015_24408.cpp:149:2: error: expected unqualified-id at end of input
  }
  ^