View Compilation Error

304446_0_7441.cpp: In function `bool judge(const char*, const char*, int, int)':
304446_0_7441.cpp:10: error: `la' undeclared (first use this function)
304446_0_7441.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)
304446_0_7441.cpp:10: error: `lb' undeclared (first use this function)