Eroare de compilare: user.cpp:7:22: error: conflicting declaration ‘typedef unsigned int ulong’ typedef unsigned int ulong; ^ In file included from /usr/include/stdlib.h:320:0, from /usr/include/c++/4.8/cstdlib:72, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/i386-linux-gnu/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 ‘ulong Recursive::gcd(ulong, ulong)’: user.cpp:32:11: warning: no return statement in function returning non-void [-Wreturn-type] } ^