View Compilation Error

0_0_33159515_25054.cpp: In function 'double Geo_2D::area_2(Geo_2D::Point, Geo_2D::Point, Geo_2D::Point)':
0_0_33159515_25054.cpp:85:22: error: expected ';' at end of input
  return cross(B-A,C-A)
                      ^
0_0_33159515_25054.cpp:85:22: error: expected '}' at end of input
0_0_33159515_25054.cpp: At global scope:
0_0_33159515_25054.cpp:85:22: error: expected '}' at end of input