Eroare de compilare: user.cpp:10:14: error: ‘int y1’ redeclared as different kind of symbol int xp,yp,x1,y1,x2,y2,m,n; ^ 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:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘void read()’: user.cpp:27:15: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ in>>xp>>yp>>x1>>y1>>x2>>y2>>m; ^ In file included from /usr/include/c++/4.8/iostream:40:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp:26:9: warning: unused variable ‘aux’ [-Wunused-variable] int aux; ^ user.cpp: In function ‘void solve()’: user.cpp:45:27: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] int x11=x1,x22=x2,y11=y1,y22=y2; ^ user.cpp:85:31: error: no matching function for call to ‘max(int&, double (&)(double)throw ())’ if(pista.ys<=max(y2,y1)&&pista.ys>=min(y1,y2)){ ^ user.cpp:85:31: note: candidates are: In file included from /usr/include/c++/4.8/bits/char_traits.h:39:0, 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/stl_algobase.h:216:5: note: template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&) max(const _Tp& __a, const _Tp& __b) ^ /usr/include/c++/4.8/bits/stl_algobase.h:216:5: note: template argument deduction/substitution failed: user.cpp:85:31: note: deduced conflicting types for parameter ‘const _Tp’ (‘int’ and ‘double(double)throw ()’) if(pista.ys<=max(y2,y1)&&pista.ys>=min(y1,y2)){ ^ In file included from /usr/include/c++/4.8/bits/char_traits.h:39:0, 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/stl_algobase.h:260:5: note: template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare) max(const _Tp& __a, const _Tp& __b, _Compare __comp)