View Compilation Error

0_0_26956155_22717.cpp:38:7: error: 'MAXN' was not declared in this scope
 }getl[MAXN], quel[MAXN];
       ^
0_0_26956155_22717.cpp:38:19: error: 'MAXN' was not declared in this scope
 }getl[MAXN], quel[MAXN];
                   ^
0_0_26956155_22717.cpp: In function 'int HalfplaneIntersection(Line*, int, Point*)':
0_0_26956155_22717.cpp:84:2: error: 'quel' was not declared in this scope
  quel[0] = L[0];
  ^
0_0_26956155_22717.cpp: In function 'int main()':
0_0_26956155_22717.cpp:185:5: error: 'getl' was not declared in this scope
     getl[i] = Line(getp[i], getp[i + n] - getp[i]);
     ^
0_0_26956155_22717.cpp:186:9: error: 'getl' was not declared in this scope
    else getl[i] = Line(getp[i + n], getp[i] - getp[i + n]);
         ^
0_0_26956155_22717.cpp:189:3: error: 'getl' was not declared in this scope
   getl[m++] = Line(Point(r, -r), Point(r, r) - Point(r, -r));
   ^