View Compilation Error

0_0_39356650_2662.cpp: In function 'int is_g180_degree(long long int, long long int, long long int, long long int)':
0_0_39356650_2662.cpp:9:24: error: 'y0' was not declared in this scope; did you mean 'x0'?
    9 |         if (x0*y1 - x1*y0 < 0)
      |                        ^~
      |                        x0
0_0_39356650_2662.cpp: In function 'int main()':
0_0_39356650_2662.cpp:33:30: error: 'is_ge180_degree' was not declared in this scope; did you mean 'is_g180_degree'?
   33 |                         if ( is_ge180_degree(vec0_x, vec0_y, vec1_x, vec1_y)){
      |                              ^~~~~~~~~~~~~~~
      |                              is_g180_degree