Compilare: user.cpp: In function ‘nod* bfs(std::vector<nod*>*, nod*, int*)’: user.cpp:27:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < vecini[current->index].size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:69:7: warning: unused variable ‘y’ [-Wunused-variable] nod* y = bfs(vecini, x, &maxDistance); ^ user.cpp:45:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("darb.in", "r", stdin); ^ user.cpp:46:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("darb.out","w",stdout); ^ user.cpp:48:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &n); ^ user.cpp:55:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &u->index); ^ user.cpp:58:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &v->index); ^