View Compilation Error

0_0_29471480_28713.cpp: In function 'int main()':
0_0_29471480_28713.cpp:51:55: error: expected ',' or ';' at end of input
         double ansy = s1*g[1].y + s2*g[2].y + s3*g[3].y
                                                       ^
0_0_29471480_28713.cpp:51:55: error: expected '}' at end of input
0_0_29471480_28713.cpp:51:55: error: expected '}' at end of input