View Compilation Error

0_0_32173545_28015.cpp: In member function 'void node::free(int, int)':
0_0_32173545_28015.cpp:62:8: error: request for member 'pr' in '(node*)this', which is of pointer type 'node*' (maybe you meant to use '->' ?)
   this.pr = pr; this.pch = pch;
        ^
0_0_32173545_28015.cpp:62:22: error: request for member 'pch' in '(node*)this', which is of pointer type 'node*' (maybe you meant to use '->' ?)
   this.pr = pr; this.pch = pch;
                      ^