Eroare de compilare: user.cpp:17: error: ISO C++ forbids declaration of ‘other’ with no type user.cpp: In member function ‘bool p::operator<(const int&) const’: user.cpp:18: error: request for member ‘y’ in ‘other’, which is of non-class type ‘const int’ user.cpp: In function ‘int main()’: user.cpp:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result In file included from /usr/include/c++/4.4/algorithm:62, from user.cpp:1: /usr/include/c++/4.4/bits/stl_algo.h: In function ‘const _Tp& std::__median(const _Tp&, const _Tp&, const _Tp&) [with _Tp = p]’: /usr/include/c++/4.4/bits/stl_algo.h:2268: instantiated from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = p*, _Size = int]’ /usr/include/c++/4.4/bits/stl_algo.h:5220: instantiated from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = p*]’ user.cpp:35: instantiated from here /usr/include/c++/4.4/bits/stl_algo.h:89: error: no match for ‘operator<’ in ‘__a < __b’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h:90: error: no match for ‘operator<’ in ‘__b < __c’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h:92: error: no match for ‘operator<’ in ‘__a < __c’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h:96: error: no match for ‘operator<’ in ‘__a < __c’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h:98: error: no match for ‘operator<’ in ‘__b < __c’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h: In function ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, _Tp) [with _RandomAccessIterator = p*, _Tp = p]’: /usr/include/c++/4.4/bits/stl_algo.h:2268: instantiated from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = p*, _Size = int]’ /usr/include/c++/4.4/bits/stl_algo.h:5220: instantiated from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = p*]’ user.cpp:35: instantiated from here /usr/include/c++/4.4/bits/stl_algo.h:2209: error: no match for ‘operator<’ in ‘* __first < __pivot’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h:2212: error: no match for ‘operator<’ in ‘__pivot < * __last’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h: In function ‘void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = p*]’: /usr/include/c++/4.4/bits/stl_algo.h:2178: instantiated from ‘void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = p*]’ /usr/include/c++/4.4/bits/stl_algo.h:5222: instantiated from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = p*]’ user.cpp:35: instantiated from here /usr/include/c++/4.4/bits/stl_algo.h:2106: error: no match for ‘operator<’ in ‘__val < * __first’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h: In function ‘void std::__heap_select(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = p*]’: /usr/include/c++/4.4/bits/stl_algo.h:5067: instantiated from ‘void std::partial_sort(_RAIter, _RAIter, _RAIter) [with _RAIter = p*]’ /usr/include/c++/4.4/bits/stl_algo.h:2256: instantiated from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = p*, _Size = int]’ /usr/include/c++/4.4/bits/stl_algo.h:5220: instantiated from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = p*]’ user.cpp:35: instantiated from here /usr/include/c++/4.4/bits/stl_algo.h:1906: error: no match for ‘operator<’ in ‘* __i < * __first’ user.cpp:17: note: candidates are: bool p::operator<(const int&) const /usr/include/c++/4.4/bits/stl_algo.h: In function ‘void std::__unguarded_linear_insert(_RandomAccessIterator, _Tp) [with _RandomAccessIterator = p*, _Tp = p]’: /usr/include/c++/4.4/bits/stl_algo.h:2112: instantiated from ‘void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = p*]’ /usr/include/c++/4.4/bits/stl_algo.h:2178: instantiated from ‘void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = p*]’ /usr/include/c++/4.4/bits/stl_algo.h:5222: instantiated from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = p*]’ user.cpp:35: instantiated from here