Eroare de compilare: user.cpp: In function ‘void back(int)’: user.cpp:9:4: error: ‘cout’ was not declared in this scope cout<<sol[i]<<"monede de "<<a[st[i]]<<" "; ^ user.cpp:9:4: 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:10:2: error: ‘cout’ was not declared in this scope cout<<endl; ^ user.cpp:10:2: 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:10:8: error: ‘endl’ was not declared in this scope cout<<endl; ^ user.cpp:10:8: 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: In function ‘int main()’: user.cpp:23:2: error: ‘ifstream’ was not declared in this scope {ifstream f("fisier.txt"); ^ user.cpp:23:2: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/ios:38:0, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/local/include/c++/4.8.0/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:23:11: error: expected ‘;’ before ‘f’ {ifstream f("fisier.txt"); ^ user.cpp:24:1: error: ‘f’ was not declared in this scope f>>suma; ^ user.cpp:35:5: error: ‘cout’ was not declared in this scope {cout<<"Pentru submultimea : "; ^ user.cpp:35:5: note: suggested alternative: In file included from user.cpp:1:0: /usr/local/include/c++/4.8.0/iostream:61:18: note: ‘std::cout’