View Compilation Error

0_0_30939980_28520.cpp:21:9: error: field 'chuizhi' has incomplete type 'vec {aka point}'
     vec chuizhi
         ^
0_0_30939980_28520.cpp:21:9: error: expected ';' at end of member declaration
0_0_30939980_28520.cpp:21:9: error: expected '}' at end of input
0_0_30939980_28520.cpp:20:5: error: expected unqualified-id at end of input
     }
     ^