btowc - Convert (one-byte) multibyte character to wide character

Definition	#include <stdio.h> #include <wchar.h> wint_t btowc(int c); btowc converts a multibyte character c, which must consist of one byte and be in the initial shift state, to a wide character.
Return val.	Wide character, if successful.
	WEOF	if c has the value EOF or if (unsigned char)c does not represent a valid (one-byte) multibyte character in the initial shift state.
Note	This version of the C runtime system only supports one-byte characters as wide character codes or multibyte characters. The shift state of the multibyte character is ignored.
See also	mblen, mbtowc, wcstombs, wctomb