View Compilation Error

0_0_30125106_16141.cpp:51:13: error: expected '}' at end of input
         ans.num
             ^
0_0_30125106_16141.cpp: In member function 'fraction fraction::operator-(const fraction&) const':
0_0_30125106_16141.cpp:51:13: error: 'struct fraction' has no member named 'num'
0_0_30125106_16141.cpp:51:13: error: expected '}' at end of input
0_0_30125106_16141.cpp: At global scope:
0_0_30125106_16141.cpp:51:13: error: expected unqualified-id at end of input