View Compilation Error

380530_0_0_24168.cpp: In function `void df(int)':
380530_0_0_24168.cpp:43: error: `typeof' undeclared (first use this function)
380530_0_0_24168.cpp:43: error: (Each undeclared identifier is reported only once for each function it appears in.)
380530_0_0_24168.cpp:43: error: expected `;' before "it"
380530_0_0_24168.cpp:45: error: `it' undeclared (first use this function)