Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:7:13: error: variable ‘std::ifstream in’ has initializer but incomplete type ifstream in("adunare.in") ^ user.cpp:8:2: error: expected ‘,’ or ‘;’ before ‘ofstream’ ofstream out("adunare.out") ^ user.cpp:11:6: error: ‘x’ was not declared in this scope cin>>x; ^ user.cpp:12:6: error: ‘y’ was not declared in this scope cin>>y; ^ user.cpp:13:1: error: ‘z’ was not declared in this scope z =x + y; ^