Why I cann't compile "hello.cpp" example ?

[shadow86]

I've install Devc++5 ,but I cann't compile any program which include the header <iostream> .Who can tell me why?

This is the program:
#include <iostream>

                    using namespace std;

                    int main (int argc, char *argv[])
                     { 
                        char quit;

                        quit = '\0';
                        while (quit != 'q')
                         {
                           cout << "Hello ! This is a console app." << endl;
                           cout << "To create a console, go to Project Options and select" << endl;
                           cout << "\'Win32 Console\'." << endl;
                           cout << "Press q to quit " << endl;
                           cin >> quit;
                          }

                        return 0;
                     }

           and this is ERROR MESSAGE  :              89 C:\Dev-Cpp\include\cwctype '::iswblank' has not been declared

          I've updata the compiler gcc to 4.1.2  .

          And my settings :compiler options -> directories -> bin  {  c:\Dev-Cpp\bin
                                                                      c:\Dev-Cpp\libexec\gcc\mingw\4.1.2\ 
                                                                      c:\Dev-Cpp\libexec\gcc\mingw\4.1.2\install-tool
                                                                      c:\Dev-Cpp\mingw\bin
                                                                    }
                                                              lib      {  c:\Dev-Cpp\lib   }
                                                           C include   {  c:\Dev-Cpp\include}
                                                          cppinclude   {  c:\Dev-Cpp\include
                                                                            c:\Dev-Cpp   }

[Osito]

I don't think you have all the C++ include directories. I upgraded so my paths are no longer the default, but I have:

C:\mingw\lib\gcc\i686-pc-mingw32\4.2.1-dw2\include
C:\mingw\include\c++\4.2.1-dw2\backward
C:\mingw\include\c++\4.2.1-dw2\i686-pc-mingw32
C:\mingw\include\c++\4.2.1-dw2
C:\mingw\include

So you may need to add some additional paths. I remember when I first upgraded I just put in 'C:\mingw\include' and that wasn't enough.