Eroare de compilare: user.cpp:4:12: error: variable ‘std::ifstream in’ has initializer but incomplete type ifstream in("BFS.in"); ^ user.cpp:5:13: error: variable ‘std::ofstream out’ has initializer but incomplete type ofstream out("BFS.out"); ^ user.cpp:7:20: error: expected unqualified-id before ‘;’ token int prim=0,ultim=0,; ^ user.cpp: In function ‘void citire()’: user.cpp:11:9: error: ‘n’ was not declared in this scope in>>n>>m; ^ user.cpp:11:12: error: ‘m’ was not declared in this scope in>>n>>m; ^ user.cpp:13:15: error: ‘x’ was not declared in this scope {in>>x>>y; ^ user.cpp:13:18: error: ‘y’ was not declared in this scope {in>>x>>y; ^