Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:57:16: error: ‘v’ was not declared in this scope while (v[l].x + v[l+1].x < v[i].x) ++l; ^ user.cpp:49:9: warning: unused variable ‘t’ [-Wunused-variable] int t,k; ^ user.cpp:48:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triangles.out","w",stdout); ^