Eroare de compilare: user.cpp: In function ‘bool find(POINT2D&)’: user.cpp:42:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < H[get_key(p)].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:96:28: error: no matching function for call to ‘find(POINT2D)’ if (find(POINT2D(x1, y1)) == 1) ^ user.cpp:96:28: note: candidates are: user.cpp:40:6: note: bool find(POINT2D&) bool find(POINT2D &p) ^ user.cpp:40:6: note: no known conversion for argument 1 from ‘POINT2D {aka std::pair<long double, long double>}’ to ‘POINT2D& {aka std::pair<long double, long double>&}’ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h:4455:5: note: template<class _IIter, class _Tp> _IIter std::find(_IIter, _IIter, const _Tp&) find(_InputIterator __first, _InputIterator __last, ^ /usr/include/c++/4.8/bits/stl_algo.h:4455:5: note: template argument deduction/substitution failed: user.cpp:96:28: note: candidate expects 3 arguments, 1 provided if (find(POINT2D(x1, y1)) == 1) ^ In file included from /usr/include/c++/4.8/bits/locale_facets.h:48:0, from /usr/include/c++/4.8/bits/basic_ios.h:37, from /usr/include/c++/4.8/ios:44, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/streambuf_iterator.h:369:5: note: template<class _CharT2> typename __gnu_cxx::__enable_if<std::__is_char<_CharT2>::__value, std::istreambuf_iterator<_CharT> >::__type std::find(std::istreambuf_iterator<_CharT>, std::istreambuf_iterator<_CharT>, const _CharT2&) find(istreambuf_iterator<_CharT> __first, ^ /usr/include/c++/4.8/bits/streambuf_iterator.h:369:5: note: template argument deduction/substitution failed: user.cpp:96:28: note: ‘std::pair<long double, long double>’ is not derived from ‘std::istreambuf_iterator<_CharT>’ if (find(POINT2D(x1, y1)) == 1) ^ user.cpp:98:28: error: no matching function for call to ‘find(POINT2D)’ if (find(POINT2D(x2, y2)) == 1) ^ user.cpp:98:28: note: candidates are: user.cpp:40:6: note: bool find(POINT2D&) bool find(POINT2D &p) ^ user.cpp:40:6: note: no known conversion for argument 1 from ‘POINT2D {aka std::pair<long double, long double>}’ to ‘POINT2D& {aka std::pair<long double, long double>&}’ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h:4455:5: note: template<class _IIter, class _Tp> _IIter std::find(_IIter, _IIter, const _Tp&) find(_InputIterator __first, _InputIterator __last, ^ /usr/include/c++/4.8/bits/stl_algo.h:4455:5: note: template argument deduction/substitution failed: user.cpp:98:28: note: candidate expects 3 arguments, 1 provided