Compilare: user.cpp: In function ‘bool intersectie(segm, segm)’: user.cpp:12:42: warning: unused variable ‘X’ [-Wunused-variable] double ax=0,bx=0,cx=0,ay=0,by=0,cy=0,X,Y; ^ user.cpp:12:44: warning: unused variable ‘Y’ [-Wunused-variable] double ax=0,bx=0,cx=0,ay=0,by=0,cy=0,X,Y; ^ user.cpp: In function ‘int main()’: user.cpp:55:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("geometry.in","r",stdin); ^ user.cpp:56:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("geometry.out","w",stdout); ^