Eroare de compilare: user.cpp:4:12: error: ‘int y1’ redeclared as different kind of symbol int n,m,x1,y1,x2,y2; ^ In file included from /usr/include/features.h:357:0, from /usr/include/assert.h:37, from /usr/include/c++/4.8/cassert:43, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:33, 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 ‘int lee()’: user.cpp:26:20: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘std::deque<int>::value_type {aka int}’ [-fpermissive] dj.push_back(y1); ^ In file included from /usr/include/c++/4.8/deque:64:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:67, from user.cpp:1: /usr/include/c++/4.8/bits/stl_deque.h:1404:7: error: initializing argument 1 of ‘void std::deque<_Tp, _Alloc>::push_back(std::deque<_Tp, _Alloc>::value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; std::deque<_Tp, _Alloc>::value_type = int]’ [-fpermissive] push_back(value_type&& __x) ^ user.cpp: In function ‘int main()’: user.cpp:64:12: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ f>>n>>m>>x1>>y1>>x2>>y2; ^ In file included from /usr/include/c++/4.8/sstream:38:0, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, 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) ^