Eroare de compilare: user.cpp: In function ‘void citire()’: user.cpp:8:4: error: ‘ifstream’ was not declared in this scope ifstream f("royfloyd.in"); ^~~~~~~~ user.cpp:8:4: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:1: /usr/include/c++/6/iosfwd:162:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^~~~~~~~ user.cpp:9:4: error: ‘ofstream’ was not declared in this scope ofstream g("royfloyd.out"); ^~~~~~~~ user.cpp:9:4: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:1: /usr/include/c++/6/iosfwd:165:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^~~~~~~~ user.cpp:12:5: error: ‘f’ was not declared in this scope f>>n ; ^ user.cpp: In function ‘void afis()’: user.cpp:31:34: error: ‘g’ was not declared in this scope for (j = 1; j <= n; j++) g<<a[i][j]<<" " ; ^ user.cpp:32:9: error: ‘g’ was not declared in this scope g<<endl ; ^ user.cpp:32:12: error: ‘endl’ was not declared in this scope g<<endl ; ^~~~ user.cpp:32:12: note: suggested alternative: In file included from /usr/include/c++/6/iostream:39:0, from user.cpp:1: /usr/include/c++/6/ostream:590:5: note: ‘std::endl’ endl(basic_ostream<_CharT, _Traits>& __os) ^~~~