Eroare de compilare: user.cpp: In function ‘int div(int, int)’: user.cpp:6:20: error: new declaration ‘int div(int, int)’ int div(int a,int b) ^ In file included from /usr/local/include/c++/4.8.0/cstdlib:72:0, 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/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/include/stdlib.h:780:14: error: ambiguates old declaration ‘div_t div(int, int)’ extern div_t div (int __numer, int __denom) ^ user.cpp:9:26: error: cannot convert ‘div_t’ to ‘int’ in return else return div(a,a%b); ^ user.cpp: In function ‘void citire()’: user.cpp:18:22: error: cannot bind ‘std::basic_ostream<char>’ lvalue to ‘std::basic_ostream<char>&&’ fout<<div(a,b)<<"\n"; ^ In file included from /usr/local/include/c++/4.8.0/istream:39:0, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/ostream:602:5: error: initializing argument 1 of ‘std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = div_t]’ operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x) ^ user.cpp: In function ‘int div(int, int)’: user.cpp:10:1: warning: control reaches end of non-void function [-Wreturn-type] } ^