I cann't use "getchar()"

Hi,

The stdout/stdin/stderr devices are initialized in alt_main by the following code:

alt_sys_init ();

/*

* Redirect stdout etc. to the apropriate devices now that the devices have

* been initialised. This is only done if the user has requested that the

* channels been directed away from /dev/null - which is how the channels

* are configured by default. Making the call to alt_io_redirect conditional

* allows this function to be excluded from optomised executables when it

* is unecessary.

*/

if (strcmp (ALT_STDOUT, "/dev/null") ||

strcmp (ALT_STDIN, "/dev/null") ||

strcmp (ALT_STDERR, "/dev/null"))

{

alt_io_redirect (ALT_STDOUT, ALT_STDIN, ALT_STDERR);

}

/* Call the C++ constructors */

_do_ctors ();

In your program, you detele these codes, so it can't support any stdout/stdin/stderr operation.

best regards,

David