View Compilation Error

0_0_9253998_9087.cpp: In function `std::string ip2format(std::string)':
0_0_9253998_9087.cpp:109: error: `typeof' undeclared (first use this function)
0_0_9253998_9087.cpp:109: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9253998_9087.cpp:109: error: expected `;' before "it"
0_0_9253998_9087.cpp:109: error: `it' undeclared (first use this function)