Eroare de compilare: user.cpp:3:1: error: ‘ifstream’ does not name a type ifstream f("algstruct.in"); ^ user.cpp:4:1: error: ‘ofstream’ does not name a type ofstream g("algstruct.out"); ^ user.cpp: In function ‘int main()’: user.cpp:30:2: error: ‘f’ was not declared in this scope f>>n; ^ user.cpp:37:3: error: ‘g’ was not declared in this scope g<<v[i]<<" "; ^ user.cpp:39:2: error: ‘g’ was not declared in this scope g.close(); ^