View Compilation Error

0_0_38762638_28963.cpp: In function 'void Convex(Point*, int&)':
0_0_38762638_28963.cpp:62:39: error: 'tp' was not declared in this scope; did you mean 'p'?
   62 |         while (pos >= 2 && ((p[i] - p[tp - 1]) * (p[pos] - p[pos - 1]) >= 0))
      |                                       ^~
      |                                       p