Eroare de compilare: In file included from /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/backward/fstream.h:31, from user.cpp:1: /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/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 <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated. user.cpp:16:9: warning: multi-character character constant user.cpp:24:19: warning: multi-character character constant user.cpp:26:11: warning: multi-character character constant user.cpp:37:7: warning: multi-character character constant user.cpp: In function 'int main()': user.cpp:14: error: 'strrev' was not declared in this scope user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:6: warning: unused variable 'k'