C / C++ / MFC

c:\andreas\programmering\cpp\arraytesting\arraytesting\arraytesting.cpp(11) : error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)
        c:\program\microsoft visual studio 9.0\vc\include\ostream(653): could be 'std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,const char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(700): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,char)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(738): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits xmlns:std="#unknown"><char>>(std::basic_ostream<_Elem,_Traits> &,const char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(785): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,char)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(909): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,const signed char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(916): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,signed char)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(923): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,const unsigned char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(930): or       'std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits><char>>(std::basic_ostream<_Elem,_Traits> &,unsigned char)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(170): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ostream<_Elem,_Traits> &(__cdecl *)(std::basic_ostream<_Elem,_Traits> &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(176): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(183): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::ios_base &(__cdecl *)(std::ios_base &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(190): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::_Bool)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(210): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(short)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(243): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned short)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(263): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 int)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(288): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned int)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(308): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(328): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned long)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(349): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__int64)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(369): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned __int64)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(390): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(float)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(410): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(double)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(430): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long double)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(450): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(const void *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        c:\program\microsoft visual studio 9.0\vc\include\ostream(470): or       'std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_streambuf<_Elem,_Traits> *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        while trying to match the argument list '(std::ostream, std::string)'
Build log was saved at "file://c:\Andreas\Programmering\Cpp\ArrayTesting\ArrayTesting\Debug\BuildLog.htm"
ArrayTesting - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped
</char></char></char></char></char></char></char></char></char></char></char></char></char></char></char></char></char></char></char></std::char_traits></char></char></std::char_traits></char></char></std::char_traits></char></char></std::char_traits></char></char></std::char_traits></char></char></std::char_traits></char></char></char></char>

#include <string>
#include <iostream>

cout << (a[3]).c_str();

Joplinazz wrote:

And one other thing; how can i create a string from several elements of this array?

#include <sstream>

int main()
{
    std::string Strings[] = { "a", "b", "c" };
    std::ostringstream stm;

    stm << Strings[2] << Strings[0] << Strings[1] << std::endl;
    std::cout << stm.str().c_str();
}

FrankMookie wrote:

infile_file.open(filename);

infile_file.open(filename.c_str());

Andy@ wrote:

Is it possible to access a xlsx file over CDaoDatabase and CDaoRecordset like the old xls excel files?

Andy@ wrote:

The code base i use is MFC, with a class that get the Data from the xls Excel format over the MFC classes CDaoDatabase and CDaoRecordset.
I wrote this some times ago. Now i need to handle the new format of xlsx files.