View Compilation Error

0_0_7972854_18757.cpp: In function `int main()':
0_0_7972854_18757.cpp:47: error: `typeof' undeclared (first use this function)
0_0_7972854_18757.cpp:47: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7972854_18757.cpp:47: error: expected `;' before "k"
0_0_7972854_18757.cpp:47: error: `k' undeclared (first use this function)