Eroare de compilare: user.cpp:3:1: error: ‘ifstream’ does not name a type ifstream cin("chiftea.in"); ^ user.cpp:4:1: error: ‘ofstream’ does not name a type ofstream cout("chiftea.out"); ^ user.cpp: In function ‘int main()’: user.cpp:11:2: error: ‘cin’ was not declared in this scope cin>>t; ^ user.cpp:15:3: error: ‘cout’ was not declared in this scope cout<<(a[i]*4)-2*(a[i]-1)<<'\n'; ^