View Compilation Error

0_0_3297947_23883.cpp:12: error: `MAXN' was not declared in this scope
0_0_3297947_23883.cpp: In member function `void DancingLink::link(DLnode*, long int)':
0_0_3297947_23883.cpp:26: error: `temp' undeclared (first use this function)
0_0_3297947_23883.cpp:26: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3297947_23883.cpp: In member function `void DancingLink::create(long int)':
0_0_3297947_23883.cpp:59: error: `temp' undeclared (first use this function)