Compilare: user.cpp: In function ‘void AddInters(Point, Point, Point, Point)’: user.cpp:56:17: warning: unused variable ‘hh’ [-Wunused-variable] int hh = 0; ^ user.cpp: In function ‘int main()’: user.cpp:140:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:143:73: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &v[i].a.x, &v[i].a.y, &v[i].b.x, &v[i].b.y); ^