Write a wide-character string to a file stream
#include <wchar.h> int fputws(const wchar_t *ws, FILE *stream);
The fputws() function returns a nonnegative integer if the operation was successful, or -1 to indicate an error.
The behavior of fputws() depends on the LC_CTYPE category of the current locale.
In the absence of additional information passed to the fopen(3) call, it is reasonable to expect that fputws() will actually write the multibyte string corresponding to the wide-character string ws.
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