Eroare de compilare: user.cpp:8:9: error: ‘int y0’ redeclared as different kind of symbol int x0, y0, d; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iostream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:242:1: error: previous declaration of ‘double y0(double)’ __MATHCALL (y0,, (_Mdouble_)); ^ user.cpp: In function ‘void gcd(int, int)’: user.cpp:13:8: error: assignment of function ‘double y0(double)’ y0 = 0; ^ user.cpp:13:8: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:18:15: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] int tmp = y0; ^ user.cpp:19:17: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator*’ y0 = x0 - q*y0; ^ user.cpp: In function ‘int main()’: user.cpp:39:18: error: no matching function for call to ‘swap(int&, double (&)(double)throw ())’ swap(x0, y0); ^ user.cpp:39:18: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_pair.h:59:0, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/move.h:166:5: note: template<class _Tp> void std::swap(_Tp&, _Tp&) swap(_Tp& __a, _Tp& __b) ^ /usr/include/c++/4.8/bits/move.h:166:5: note: template argument deduction/substitution failed: user.cpp:39:18: note: deduced conflicting types for parameter ‘_Tp’ (‘int’ and ‘double(double)throw ()’) swap(x0, y0); ^ In file included from /usr/include/c++/4.8/bits/stl_pair.h:59:0, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/move.h:185:5: note: template<class _Tp, unsigned int _Nm> void std::swap(_Tp (&)[_Nm], _Tp (&)[_Nm]) swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm])