Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:34:2: error: ‘ifstream’ was not declared in this scope ifstream fIn("luffpar.in"); ^ user.cpp:34:2: note: suggested alternative: In file included from /usr/include/c++/5/ios:38:0, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/iosfwd:162:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:35:2: error: ‘ofstream’ was not declared in this scope ofstream fOut("luffpar.out"); ^ user.cpp:35:2: note: suggested alternative: In file included from /usr/include/c++/5/ios:38:0, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/iosfwd:165:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:36:2: error: ‘fIn’ was not declared in this scope fIn >> n; ^ user.cpp:51:4: error: ‘fOut’ was not declared in this scope fOut << LuffparType2(l, r) << '\n'; ^ user.cpp:56:2: error: ‘fOut’ was not declared in this scope fOut.close(); ^