Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream f("expozitie.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream g("expozitie.out"); ^ user.cpp: In function ‘int main()’: user.cpp:6:2: error: ‘f’ was not declared in this scope {f>>n; ^ user.cpp:15:1: error: ‘g’ was not declared in this scope g<<s; ^