View Compilation Error

0_0_4662215_10856.cpp: In function `double gao(int, int, int, hplane, point)':
0_0_4662215_10856.cpp:167: error: expected `;' before "int"
0_0_4662215_10856.cpp:168: error: `mid' undeclared (first use this function)
0_0_4662215_10856.cpp:168: error: (Each undeclared identifier is reported only once for each function it appears in.)