Eroare de compilare: user.cpp:5:28: error: conflicting declaration ‘typedef long long unsigned int ulong’ typedef unsigned long long ulong; ^ In file included from /usr/include/stdlib.h:320:0, from /usr/local/include/c++/4.8.0/cstdlib:72, from /usr/local/include/c++/4.8.0/ext/string_conversions.h:41, from /usr/local/include/c++/4.8.0/bits/basic_string.h:2817, from /usr/local/include/c++/4.8.0/string:52, from /usr/local/include/c++/4.8.0/bits/locale_classes.h:40, from /usr/local/include/c++/4.8.0/bits/ios_base.h:41, from /usr/local/include/c++/4.8.0/ios:42, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/include/sys/types.h:151:27: error: ‘ulong’ has a previous declaration as ‘typedef long unsigned int ulong’ typedef unsigned long int ulong; ^ user.cpp: In function ‘int main()’: user.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(cpy-- > k){ ^ user.cpp:24:11: warning: unused variable ‘m’ [-Wunused-variable] ulong n, m; ^