这是我的地图
map<pair<string,int>,pair<string,Array> > matchMap;
这是功能:
void Schedule::studentSchedule()
{
string s,c;
cout << "Enter the student and course name to create schedule" << endl;
cin >> s >> c;
list<string>::iterator studentLoc;
map<pair<string,Array> >::iterator courseL;
studentLoc = find(getStudentList().begin(),getStudentList().end(),s);
courseL = find(getMatchMap().begin(),getMatchMap().end(),c);
if (studentLoc != getStudentList().end() && courseL != getMatchMap().end())
{}
}
我在这里找不到字符串,因为出现错误:
courseL = find(getMatchMap().begin(),c);
如何找到想要的元素?这是错误:
In file included from C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algobase.h:71,from C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/algorithm:61,from C:\Users\Fatih\Desktop\clion\SchoolProject1\Schedule.cpp:4:
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/predefined_ops.h: In instantiation of 'bool __gnu_cxx::__ops::_Iter_equals_val<_Value>::operator()(_Iterator) [with _Iterator = std::_Rb_tree_iterator<std::pair<const std::pair<std::__cxx11::basic_string<char>,std::pair<std::__cxx11::basic_string<char>,std::array<int,6> > > >; _Value = const std::__cxx11::basic_string<char>]':
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algo.h:104:42: required from '_InputIterator std::__find_if(_InputIterator,_InputIterator,_Predicate,std::input_iterator_tag) [with _InputIterator = std::_Rb_tree_iterator<std::pair<const std::pair<std::__cxx11::basic_string<char>,6> > > >; _Predicate = __gnu_cxx::__ops::_Iter_equals_val<const std::__cxx11::basic_string<char> >]'
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algo.h:161:23: required from '_Iterator std::__find_if(_Iterator,_Iterator,_Predicate) [with _Iterator = std::_Rb_tree_iterator<std::pair<const std::pair<std::__cxx11::basic_string<char>,6> > > >; _Predicate = __gnu_cxx::__ops::_Iter_equals_val<const std::__cxx11::basic_string<char> >]'
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algo.h:3905:28: required from '_IIter std::find(_IIter,_IIter,const _Tp&) [with _IIter = std::_Rb_tree_iterator<std::pair<const std::pair<std::__cxx11::basic_string<char>,6> > > >; _Tp = std::__cxx11::basic_string<char>]'
C:\Users\Fatih\Desktop\clion\SchoolProject1\Schedule.cpp:24:63: required from here
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/predefined_ops.h:241:17: error: no match for 'operator==' (operand types are 'std::pair<const std::pair<std::__cxx11::basic_string<char>,6> > >' and 'const std::__cxx11::basic_string<char>')
{ return *__it == _M_value; }
~~~~~~^~~~~~~~~~~
In file included from C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_algobase.h:67,from C:\Users\Fatih\Desktop\clion\SchoolProject1\Schedule.cpp:4:
C:/PROGRA~1/MINGW-~1/X86_64~1.0-P/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/bits/stl_iterator.h:860:5: note: candidate: 'template<class _IteratorL,class _IteratorR,class _Container> bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_IteratorL,_Container>&,const __gnu_cxx::__normal_iterator<_IteratorR,_Container>&)'
operator==(const __normal_iterator<_IteratorL,_Container>& __lhs,