Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:30:27: error: no match for ‘operator<=’ (operand types are ‘interval’ and ‘int’) for(i = 1;i <= n && v[i] <= a;i++) ^ user.cpp:30:27: note: candidates are: In file included from /usr/include/c++/4.8/utility:70:0, from /usr/include/c++/4.8/algorithm:60, from user.cpp:2: /usr/include/c++/4.8/bits/stl_pair.h:239:5: note: 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++/4.8/bits/stl_pair.h:239:5: note: template argument deduction/substitution failed: user.cpp:30:30: note: ‘interval’ is not derived from ‘const std::pair<_T1, _T2>’ for(i = 1;i <= n && v[i] <= a;i++) ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:315:5: note: 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++/4.8/bits/stl_iterator.h:315:5: note: template argument deduction/substitution failed: user.cpp:30:30: note: ‘interval’ is not derived from ‘const std::reverse_iterator<_Iterator>’ for(i = 1;i <= n && v[i] <= a;i++) ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:365:5: note: 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++/4.8/bits/stl_iterator.h:365:5: note: template argument deduction/substitution failed: user.cpp:30:30: note: ‘interval’ is not derived from ‘const std::reverse_iterator<_Iterator>’ for(i = 1;i <= n && v[i] <= a;i++) ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:1067:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&) operator<=(const move_iterator<_IteratorL>& __x, ^ /usr/include/c++/4.8/bits/stl_iterator.h:1067:5: note: template argument deduction/substitution failed: user.cpp:30:30: note: ‘interval’ is not derived from ‘const std::move_iterator<_Iterator>’ for(i = 1;i <= n && v[i] <= a;i++) ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/algorithm:61, from user.cpp:2: /usr/include/c++/4.8/bits/stl_iterator.h:1073:5: note: template<class _Iterator> bool std::operator<=(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&) operator<=(const move_iterator<_Iterator>& __x,