Compilare: user.cpp: In function ‘void adauga(int)’: user.cpp:30:10: warning: unused variable ‘free_space’ [-Wunused-variable] bool free_space = false; ^ user.cpp: In function ‘void scrie_hash()’: user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < h[i].size(); j++) cout << h[i][j].first << ' '; ^ user.cpp: In function ‘void DFS(int)’: user.cpp:73:9: warning: unused variable ‘fiu’ [-Wunused-variable] int fiu, x, l = graf[nod].size(); ^ user.cpp: In function ‘void citeste()’: user.cpp:59:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore3.in", "r", stdin); ^ user.cpp:60:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:61:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &s); ^ user.cpp:64:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:65:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v); ^ user.cpp: In function ‘int main()’: user.cpp:94:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore3.out", "w", stdout); ^