Thread: Please help me with input errors.

Hey guys,

I'm new in here and from Austria.

Tomorrow I've to present a programmed game and the input of a textfile doesn't work.

I get the errors "ios" has not been declared and
"in" was not declared in this scope.

The error has to be in the line where the fstream commands are.

Code:

int table_x=20, table_y=20;
    char cstring[256];
    /*highscore____________________________open highscore.dat_______________________________*/
    std::fstream datfile;
    datfile.open("highscore.dat", ios::in);
    /*highscore____________________________highscores_______________________________*/
    while(mouse_x<=70||mouse_x>=255||mouse_y<=340||mouse_y>=410||!mouse_b&1)
    {
        draw_sprite(screen, menu_background, background_x, background_y);
        draw_sprite(screen, button_quit, button_x, button_quit_y);
        /*highscore________________________highscores___________________________________*/
        while (!datfile.eof())
        {
            datfile.getline(cstring, sizeof(cstring));

            textprintf_ex(screen,font,table_x,table_y,makecol(255,255,255), makecol(0, 0, 0),"%s", cstring);
            table_y=table_y+10;
        }

Thank you so much.

Hmm, dunno really what you mean but if I use

Code:

std::ios::in

I get loads of errors.

I'm using Codeblocks with Allegro.

When I'm writing std::ios::in or std::ios_base::in I get ........loads of errors xD

Code:

obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
::basic_ios()]+0xd)||undefined reference to `_imp___ZN11stlpmtx_std8ios_baseC2Ev'|
::~basic_ios()]+0x16)||undefined reference to `_imp___ZN11stlpmtx_std8ios_baseD2Ev'|
::basic_filebuf()]+0x5a)||undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_baseC1Ev'|
obj\Debug\main.o||In function `Z4menuv':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|66|undefined reference to `_imp___ZN11stlpmtx_std6localeC1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|71|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|74|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
)]+0x5e)||undefined reference to `_imp___ZN11stlpmtx_std6localeC1Ev'|
obj\Debug\main.o||In function `WinMain':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `Z4menuv':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|62|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
 int)]+0x1e)||undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_openEPKci'|
::basic_streambuf()]+0x55)||undefined reference to `_imp___ZN11stlpmtx_std6localeC1Ev'|
::~basic_streambuf()]+0x19)||undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `WinMain':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base8_M_closeEv'|
obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
)]+0x4d)||undefined reference to `_imp___ZN11stlpmtx_std8ios_base5imbueERKNS_6localeE'|
obj\Debug\main.o||In function `WinMain':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std5ctypeIcE2idE'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZNK11stlpmtx_std6locale12_M_get_facetERKNS0_2idE'|
obj\Debug\main.o||In function `Z4menuv':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|61|undefined reference to `_imp___ZN11stlpmtx_std8numpunctIcE2idE'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|62|undefined reference to `_imp___ZNK11stlpmtx_std6locale12_M_get_facetERKNS0_2idE'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|69|undefined reference to `_imp___ZN11stlpmtx_std8ios_base5imbueERKNS_6localeE'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|74|undefined reference to `_imp___ZN11stlpmtx_std6localeaSERKS0_'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|78|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|79|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|83|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
C:\Program Files (x86)\CodeBlocks\MinGW\include\stl\_fstream.h:(.text$_ZN11stlpmtx_std8ios_base23_M_check_exception_maskEv[stlpmtx_std::ios_base::_M_check_exception_mask()]+0x1d)||undefined reference to `_imp___ZN11stlpmtx_std8ios_base16_M_throw_failureEv'|
 unsigned int)]+0x2a)||undefined reference to `_imp___ZN11stlpmtx_std12__node_alloc13_M_deallocateEPvj'|
 int)]+0x1e)||undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base8_M_writeEPci'|
::_M_exit_input_mode()]+0x34)||undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base8_M_unmapEPvx'|
)]+0x66)||undefined reference to `_imp___ZN11stlpmtx_std6localeC1ERKS0_'|
)]+0x7d)||undefined reference to `_imp___ZN11stlpmtx_std6localeaSERKS0_'|
obj\Debug\main.o||In function `WinMain':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
obj\Debug\main.o||In function `ZN11stlpmtx_std16_Filebuf_Tmp_BufIcED1Ev':|
)]+0x7)||undefined reference to `_imp___ZN11stlpmtx_std7codecvtIcciE2idE'|
)]+0x16)||undefined reference to `_imp___ZNK11stlpmtx_std6locale12_M_get_facetERKNS0_2idE'|
)]+0x7)||undefined reference to `_imp___ZN11stlpmtx_std7codecvtIcciE2idE'|
)]+0x16)||undefined reference to `_imp___ZNK11stlpmtx_std6locale12_M_use_facetERKNS0_2idE'|
)]+0x2a)||undefined reference to `_imp___ZN11stlpmtx_std12__node_alloc11_M_allocateERj'|
::_M_throw_length_error() const]+0xe)||undefined reference to `_imp___ZN11stlpmtx_std24__stl_throw_length_errorEPKc'|
::~basic_ios()]+0x16)||undefined reference to `_imp___ZN11stlpmtx_std8ios_baseD2Ev'|
::~basic_ios()]+0x16)||undefined reference to `_imp___ZN11stlpmtx_std8ios_baseD2Ev'|
::~basic_streambuf()]+0x19)||undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
::~basic_streambuf()]+0x19)||undefined reference to `_imp___ZN11stlpmtx_std6localeD1Ev'|
C:\Program Files (x86)\CodeBlocks\MinGW\include\stl\_fstream.h:(.text$_ZN11stlpmtx_std13_Filebuf_base11__page_sizeEv[stlpmtx_std::_Filebuf_base::__page_size()]+0x4)||undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base12_M_page_sizeE'|
obj\Debug\main.o||In function `Z4menuv':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|66|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|76|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|81|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|85|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi'|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|109|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi'|
obj\Debug\main.o:C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|115|more undefined references to `_imp___ZN11stlpmtx_std13_Filebuf_base7_M_seekExi' follow|
obj\Debug\main.o||In function `WinMain':|
C:\Users\Andreas\Documents\Schule\AINP\2011_12\Projekt C++\C++\snake\snake\main.cpp|41|undefined reference to `_imp___ZN11stlpmtx_std13_Filebuf_base12_M_file_sizeEv'|
||More errors follow but not being shown.|
||Edit the max errors limit in compiler options...|
||=== Build finished: 50 errors, 0 warnings ===|

I'm making an Allegro based game, the code I posted was only from a function.
The other parts are running well.

I've set the liballeg.a, libaldat.a, liballd.a, liballd_s.a, liballeg_s.a, liballp.a and liballp_s.a in the compiller settings.
I remember I had set some other settings a year ago before I had to re-set-up my windows...
And I'm using the minGW

did you invoke the compiler via the gcc command or with g++? if you used gcc, try g++ instead.

show us your compiler command.

Does now one know a solution?