Compilare: user.cpp: In function ‘int main()’: user.cpp:44:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:46:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &j); ^ user.cpp:85:33: warning: ‘_where’ may be used uninitialized in this function [-Wmaybe-uninitialized] int _path = where[cycle[_where]]; ^