Eroare de compilare: user.cpp:24:13: error: ‘int y1’ redeclared as different kind of symbol int x1, x2, y1, y2; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/utility:68, from /usr/local/include/c++/4.8.0/algorithm:60, from user.cpp:1: /usr/include/bits/mathcalls.h:242:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int isRoad(int)’: user.cpp:35:21: error: invalid types ‘int [301][double(double)throw ()]’ for array subscript if (Cost > a[x1][y1] || Cost > a[x2][y2]) return 0; ^ user.cpp:39:19: error: no matching function for call to ‘std::queue<std::pair<int, int> >::push(std::pair<int, double (*)(double)throw ()>)’ Q.push(mp(x1, y1)); ^ user.cpp:39:19: note: candidates are: In file included from /usr/local/include/c++/4.8.0/queue:64:0, from user.cpp:6: /usr/local/include/c++/4.8.0/bits/stl_queue.h:212:7: note: void std::queue<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::pair<int, int>; _Sequence = std::deque<std::pair<int, int>, std::allocator<std::pair<int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::pair<int, int>] push(const value_type& __x) ^ /usr/local/include/c++/4.8.0/bits/stl_queue.h:212:7: note: no known conversion for argument 1 from ‘std::pair<int, double (*)(double)throw ()>’ to ‘const value_type& {aka const std::pair<int, int>&}’ /usr/local/include/c++/4.8.0/bits/stl_queue.h:217:7: note: void std::queue<_Tp, _Sequence>::push(std::queue<_Tp, _Sequence>::value_type&&) [with _Tp = std::pair<int, int>; _Sequence = std::deque<std::pair<int, int>, std::allocator<std::pair<int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::pair<int, int>] push(value_type&& __x) ^ /usr/local/include/c++/4.8.0/bits/stl_queue.h:217:7: note: no known conversion for argument 1 from ‘std::pair<int, double (*)(double)throw ()>’ to ‘std::queue<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}’ user.cpp:40:13: error: invalid types ‘bool [301][double(double)throw ()]’ for array subscript Used[x1][y1] = true; ^ user.cpp: In function ‘int main()’: user.cpp:75:7: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ fin >> x1 >> y1 >> x2 >> y2; ^ In file included from /usr/local/include/c++/4.8.0/iostream:40:0, from user.cpp:2: /usr/local/include/c++/4.8.0/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) ^