Eroare de compilare: user.cpp:4:1: error: ‘ifstream’ does not name a type ifstream f ("prim.in"); ^ user.cpp:5:1: error: ‘ofstream’ does not name a type ofstream g("prim.out"); ^ user.cpp: In function ‘int main()’: user.cpp:9:4: error: ‘f’ was not declared in this scope f >> k; ^ user.cpp:12:4: error: ‘cout’ was not declared in this scope cout<<"k="<<k<<endl; ^ user.cpp:12:4: note: suggested alternative: In file included from user.cpp:1:0: /usr/local/include/c++/4.8.0/iostream:61:18: note: ‘std::cout’ extern ostream cout; /// Linked to standard output ^ user.cpp:12:19: error: ‘endl’ was not declared in this scope cout<<"k="<<k<<endl; ^ user.cpp:12:19: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/iostream:39:0, from user.cpp:1: /usr/local/include/c++/4.8.0/ostream:564:5: note: ‘std::endl’ endl(basic_ostream<_CharT, _Traits>& __os) ^ user.cpp:27:4: error: ‘g’ was not declared in this scope g<<v[k+1]*v[k+1]<<" "; ^