Eroare de compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import <fstream> ^~~~~~ main.cpp: In function 'int main()': main.cpp:18:11: error: no match for 'operator<=' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'std::__cxx11::basic_string<char>::size_type {aka long unsigned int}') for(;i<=N.length();i++) ~^~~~~~~~~~~~ main.cpp:18:11: note: candidate: operator<=(int, std::__cxx11::basic_string<char>::size_type {aka long unsigned int}) <built-in> main.cpp:18:11: note: no known conversion for argument 1 from 'std::ifstream {aka std::basic_ifstream<char>}' to 'int' In file included from /usr/include/c++/6/bits/stl_algobase.h:64:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_pair.h:460:5: note: candidate: template<class _T1, class _T2> constexpr bool std::operator<=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^~~~~~~~ /usr/include/c++/6/bits/stl_pair.h:460:5: note: template argument deduction/substitution failed: main.cpp:18:22: note: 'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::pair<_T1, _T2>' for(;i<=N.length();i++) ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator.h:316:5: note: candidate: template<class _Iterator> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator<=(const reverse_iterator<_Iterator>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:316:5: note: template argument deduction/substitution failed: main.cpp:18:22: note: 'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::reverse_iterator<_Iterator>' for(;i<=N.length();i++) ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/fstream:38, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator.h:373:5: note: candidate: template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&) operator<=(const reverse_iterator<_IteratorL>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:373:5: note: template argument deduction/substitution failed: main.cpp:18:22: note: 'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::reverse_iterator<_Iterator>' for(;i<=N.length();i++) ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, Non zero exit status: 1