View Compilation Error

0_0_10191999_5898.cpp: In function `int main()':
0_0_10191999_5898.cpp:26: error: `typeof' undeclared (first use this function)
0_0_10191999_5898.cpp:26: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10191999_5898.cpp:26: error: expected `;' before "_x"
0_0_10191999_5898.cpp:26: error: expected `;' before "_y"
0_0_10191999_5898.cpp:26: error: `_x' undeclared (first use this function)
0_0_10191999_5898.cpp:26: error: `_y' undeclared (first use this function)