View Compilation Error

0_0_25912501_29991.cpp: In function 'double Cross1(point, point, point)':
0_0_25912501_29991.cpp:26:19: error: request for member 'x' in 'p', which is of non-class type 'point [50006]'
     return (a.x-p.x)*(b.y-p.y)-(b.x-p.x)*(a.y-p.y);
                   ^
0_0_25912501_29991.cpp:26:29: error: request for member 'y' in 'p', which is of non-class type 'point [50006]'
     return (a.x-p.x)*(b.y-p.y)-(b.x-p.x)*(a.y-p.y);
                             ^
0_0_25912501_29991.cpp:26:39: error: request for member 'x' in 'p', which is of non-class type 'point [50006]'
     return (a.x-p.x)*(b.y-p.y)-(b.x-p.x)*(a.y-p.y);
                                       ^
0_0_25912501_29991.cpp:26:49: error: request for member 'y' in 'p', which is of non-class type 'point [50006]'
     return (a.x-p.x)*(b.y-p.y)-(b.x-p.x)*(a.y-p.y);
                                                 ^