Eroare de compilare: In file included from /usr/include/c++/3.3/backward/fstream.h:31, from user.cpp:1: /usr/include/c++/3.3/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated. user.cpp:5: error: `main' must return `int' user.cpp:5: error: return type for `main' changed to `int' user.cpp: In function `int main(...)': user.cpp:6: error: `ios' undeclared (first use this function) user.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.) user.cpp:6: error: parse error before `::' token user.cpp:7: error: parse error before `::' token user.cpp:10: error: invalid operands of types `std::fstream ()(...)' and `char' to binary `operator>>' user.cpp:12: error: request for member `get' in `f', which is of non-aggregate type `std::fstream ()(...)' user.cpp:16: warning: comparison between signed and unsigned integer expressions user.cpp:28: error: invalid operands of types `std::fstream ()(...)' and `int' to binary `operator<<' user.cpp:28: error: `endl' undeclared (first use this function) user.cpp:29: error: request for member `close' in `f', which is of non-aggregate type `std::fstream ()(...)' user.cpp:30: error: request for member `close' in `g', which is of non-aggregate type `std::fstream ()(...)' user.cpp:8: warning: unused variable `char nrc'