View Compilation Error

0_0_9942135_21089.cpp: In function `int main()':
0_0_9942135_21089.cpp:12: error: `log' undeclared (first use this function)
0_0_9942135_21089.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9942135_21089.cpp:14: error: expected `}' at end of input
0_0_9942135_21089.cpp:14: error: expected `}' at end of input