View Compilation Error

0_0_33304462_10545.cpp: In function 'void add(const point&, const point&)':
0_0_33304462_10545.cpp:136:19: error: expected ')' at end of input
   if(is_on(e, a, b)
                   ^
0_0_33304462_10545.cpp:136:19: error: expected statement at end of input
0_0_33304462_10545.cpp:136:19: error: expected '}' at end of input