View Compilation Error

0_0_15138842_24626.cpp: In function 'int main()':
0_0_15138842_24626.cpp:29:17: error: 'f' was not declared in this scope
                 f
                 ^
0_0_15138842_24626.cpp:29:17: error: expected '}' at end of input
0_0_15138842_24626.cpp:29:17: error: expected '}' at end of input
0_0_15138842_24626.cpp:29:17: error: expected '}' at end of input
0_0_15138842_24626.cpp:29:17: error: expected '}' at end of input