View Compilation Error

0_0_29244872_28189.cpp: In function 'void IO::println()':
0_0_29244872_28189.cpp:149:27: error: 'Ost' was not declared in this scope
     inline void println(){Ost
                           ^
0_0_29244872_28189.cpp:149:27: error: expected '}' at end of input
0_0_29244872_28189.cpp: At global scope:
0_0_29244872_28189.cpp:149:27: error: expected '}' at end of input