View Compilation Error

0_0_33347212_11002.cpp:65:17: error: 'poi' has not been declared
 DO area(point a,poi
                 ^
0_0_33347212_11002.cpp:65:17: error: expected ',' or '...' at end of input
0_0_33347212_11002.cpp:65:17: error: expected ')' at end of input
0_0_33347212_11002.cpp:65:17: error: expected initializer at end of input