View Compilation Error

0_0_30906119_9681.cpp: In function 'bool intersect(point, point, point, point, DO&)':
0_0_30906119_9681.cpp:35:13: error: expected primary-expression at end of input
  if (sgn(d-c%
             ^
0_0_30906119_9681.cpp:35:13: error: expected ')' at end of input
0_0_30906119_9681.cpp:35:13: error: expected statement at end of input
0_0_30906119_9681.cpp:35:13: error: expected '}' at end of input