206858_0_19338.c:14: error: syntax error before "POINT"
206858_0_19338.c:18: error: syntax error before '&' token
206858_0_19338.c: In function `Cross':
206858_0_19338.c:20: error: `a' undeclared (first use in this function)
206858_0_19338.c:20: error: (Each undeclared identifier is reported only once
206858_0_19338.c:20: error: for each function it appears in.)
206858_0_19338.c:20: error: `o' undeclared (first use in this function)
206858_0_19338.c:20: error: request for member `y' in something not a structure or union
206858_0_19338.c:20: error: request for member `x' in something not a structure or union
206858_0_19338.c: At top level:
206858_0_19338.c:23: error: syntax error before "IsIntersect"
206858_0_19338.c:23: error: syntax error before '&' token
206858_0_19338.c: In function `IsIntersect':
206858_0_19338.c:25: error: `v' undeclared (first use in this function)
206858_0_19338.c:25: error: `u' undeclared (first use in this function)
206858_0_19338.c: In function `main':
206858_0_19338.c:36: error: `SEG' undeclared (first use in this function)
206858_0_19338.c:36: error: syntax error before "in"
206858_0_19338.c:40: error: `in' undeclared (first use in this function)
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