foo.cc: In function 'void BubbleSort()':
foo.cc:23:30: error: no match for 'operator!=' (operand types are 'double' and 'Student')
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
~~~~~~^~~~~~~~
In file included from /usr/include/c++/7/iosfwd:40:0,
from /usr/include/c++/7/ios:38,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/postypes.h:221:5: note: candidate: template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
^~~~~~~~
/usr/include/c++/7/bits/postypes.h:221:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::fpos<_StateT>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/stl_algobase.h:64:0,
from /usr/include/c++/7/bits/char_traits.h:39,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/stl_pair.h:461:5: 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++/7/bits/stl_pair.h:461:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::pair<_T1, _T2>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
from /usr/include/c++/7/bits/char_traits.h:39,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/stl_iterator.h:314:5: 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++/7/bits/stl_iterator.h:314:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::reverse_iterator<_Iterator>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
from /usr/include/c++/7/bits/char_traits.h:39,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/stl_iterator.h:352:5: 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++/7/bits/stl_iterator.h:352:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::reverse_iterator<_Iterator>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
from /usr/include/c++/7/bits/char_traits.h:39,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/stl_iterator.h:1133:5: note: candidate: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)
operator!=(const move_iterator<_IteratorL>& __x,
^~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:1133:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::move_iterator<_IteratorL>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
from /usr/include/c++/7/bits/char_traits.h:39,
from /usr/include/c++/7/ios:40,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/stl_iterator.h:1139:5: note: candidate: template<class _Iterator> bool std::operator!=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)
operator!=(const move_iterator<_Iterator>& __x,
^~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:1139:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::move_iterator<_IteratorL>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/string:41:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/allocator.h:158:5: note: candidate: template<class _T1, class _T2> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_T2>&)
operator!=(const allocator<_T1>&, const allocator<_T2>&)
^~~~~~~~
/usr/include/c++/7/bits/allocator.h:158:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::allocator<_CharT>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/string:41:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/allocator.h:164:5: note: candidate: template<class _Tp> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
^~~~~~~~
/usr/include/c++/7/bits/allocator.h:164:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::allocator<_CharT>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/string:52:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/basic_string.h:6056:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6056:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/string:52:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/basic_string.h:6069:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
operator!=(const _CharT* __lhs,
^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6069:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const _CharT*' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/string:52:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/basic_string.h:6081:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6081:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/system_error:319:3: note: candidate: bool std::operator!=(const std::error_code&, const std::error_code&)
operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: no known conversion for argument 1 from 'double' to 'const std::error_code&'
/usr/include/c++/7/system_error:323:3: note: candidate: bool std::operator!=(const std::error_code&, const std::error_condition&)
operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
^~~~~~~~
/usr/include/c++/7/system_error:323:3: note: no known conversion for argument 1 from 'double' to 'const std::error_code&'
/usr/include/c++/7/system_error:327:3: note: candidate: bool std::operator!=(const std::error_condition&, const std::error_code&)
operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
^~~~~~~~
/usr/include/c++/7/system_error:327:3: note: no known conversion for argument 1 from 'double' to 'const std::error_condition&'
/usr/include/c++/7/system_error:331:3: note: candidate: bool std::operator!=(const std::error_condition&, const std::error_condition&)
operator!=(const error_condition& __lhs,
^~~~~~~~
/usr/include/c++/7/system_error:331:3: note: no known conversion for argument 1 from 'double' to 'const std::error_condition&'
In file included from /usr/include/c++/7/bits/locale_facets.h:48:0,
from /usr/include/c++/7/bits/basic_ios.h:37,
from /usr/include/c++/7/ios:44,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from foo.cc:2:
/usr/include/c++/7/bits/streambuf_iterator.h:210:5: note: candidate: template<class _CharT, class _Traits> bool std::operator!=(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
operator!=(const istreambuf_iterator<_CharT, _Traits>& __a,
^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:210:5: note: template argument deduction/substitution failed:
foo.cc:23:37: note: mismatched types 'const std::istreambuf_iterator<_CharT, _Traits>' and 'double'
if(s[j].b<s[j+1].b&&s[j].a!=s[j+1])
^
夏浩@开发区实中 (夏浩) LV 8
undefined
