View Compilation Error

0_0_30958037_25147.cpp: In function 'double area_triangle_circle(point, double, point, point)':
0_0_30958037_25147.cpp:116:4: error: expected ',' or ';' before 'if'
    if(ks.size()==0)//相离--扇形 
    ^
0_0_30958037_25147.cpp:118:4: error: 'else' without a previous 'if'
    else//相交， 
    ^