Determine whether an integer represents a valid single-byte character in the initial shift state.

wint_t btowc(  
   int c  
);  

c
Integer to test.

Returns the wide-character representation of the character if the integer represents a valid single-byte character in the initial shift state. Returns WEOF if the integer is EOF or is not a valid single-byte character in the initial shift state. The output of this function is affected by the current LC_TYPE locale.

For additional compatibility information, see Compatibility in the Introduction.

mbtowc, _mbtowc_l