Eroare de compilare: In file included from /usr/local/include/c++/4.8.0/backward/hash_set:60:0, from user.cpp:4: /usr/local/include/c++/4.8.0/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. [-Wcpp] #warning \ ^ user.cpp: In function ‘int main()’: user.cpp:11:2: error: ‘hash_set’ was not declared in this scope hash_set<int> hash; ^ user.cpp:11:2: note: suggested alternative: In file included from user.cpp:4:0: /usr/local/include/c++/4.8.0/backward/hash_set:84:11: note: ‘__gnu_cxx::hash_set’ class hash_set ^ user.cpp:11:11: error: expected primary-expression before ‘int’ hash_set<int> hash; ^ user.cpp:11:11: error: expected ‘;’ before ‘int’ user.cpp:15:11: error: expected primary-expression before ‘int’ hash_set<int>::const_iterator res; ^ user.cpp:15:11: error: expected ‘;’ before ‘int’ user.cpp:23:8: error: missing template arguments before ‘.’ token hash.insert(val); ^ user.cpp:26:8: error: missing template arguments before ‘.’ token hash.erase(val); ^ user.cpp:29:4: error: ‘res’ was not declared in this scope res = hash.find(val); ^ user.cpp:29:14: error: missing template arguments before ‘.’ token res = hash.find(val); ^ user.cpp:30:19: error: missing template arguments before ‘.’ token if (res != hash.end()) ^