View Compilation Error

0_0_17567270_20557.cpp:44:2: error: stray '#' in program
 « Back
  ^
0_0_17567270_20557.cpp:44:3: error: expected unqualified-id before numeric constant
 « Back
   ^
0_0_17567270_20557.cpp:44:3: error: expected constructor, destructor, or type conversion before numeric constant
0_0_17567270_20557.cpp:44:8: error: 'Back' does not name a type
 « Back
        ^