why is this boroken?

[box231]

#if _GLIBCXX_HAVE_WCHAR_H
#include <wchar.h>
#endif

#ifndef _GLIBCXX_CWCHAR
#define _GLIBCXX_CWCHAR 1

// Need to do a bit of trickery here with mbstate_t as char_traits
// assumes it is in wchar.h, regardless of wchar_t specializations.
#ifndef _GLIBCXX_HAVE_MBSTATE_T
extern "C"


fatal error: wchar.h: No such file or directory

I tried reinstalling code blocks,the compiler,system restore,tried Microsoft VS.
I am using win7.

[dutch]

I wonder if <cwchar> would work.

[box231]

How?I can write any basic program,but is still shows me that.

[Duthomhas]

Go to the CB compiler settings and make sure it is set to be using the latest standard. GCC otherwise defaults to a time before wchar.h existed.

I assume you have the latest version of CB, which comes with a decent GCC. If not, it might be worth your time to upgrade your GCC == download and install the latest and then go to the CB compiler settings to use the newly-installed compiler instead of the one that came preinstalled.

BTW, a word of warning: don’t touch mbstate_t. It is specifically declared as a piece of compiler-specific magic. It is probably worth your time to find a different way to do what you want.

Hope this helps.