Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:10:5: error: ‘ifstream’ was not declared in this scope ifstream fin(input); ^ user.cpp:10:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:10:14: error: expected ‘;’ before ‘fin’ ifstream fin(input); ^ user.cpp:11:5: error: ‘ofstream’ was not declared in this scope ofstream fout(output); ^ user.cpp:11:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/iosfwd:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:11:14: error: expected ‘;’ before ‘fout’ ofstream fout(output); ^ user.cpp:12:5: error: ‘fin’ was not declared in this scope fin>>p; ^ user.cpp:24:13: error: ‘fout’ was not declared in this scope fout<<"-1"<<"\n"; ^ user.cpp:33:13: error: ‘fout’ was not declared in this scope fout<<x*5; ^ user.cpp:38:13: error: ‘fout’ was not declared in this scope fout<<-1; ^ user.cpp:40:5: error: ‘fout’ was not declared in this scope fout<<"\n"; ^