This is a Hardware specific function. It is not implemented in the Compiler.
#include <stdlib.h>
size_t mbstowcs(wchar_t *wcs,
const char *mbs,
size_t n);
mbstowcs() converts a multi-byte character string mbs to a wide character string wcs. Only the first n elements are converted.
The number of elements converted, or (size_t) - 1 if there was an error.
mblen() and