What's the difference between %c and %C in printf?

Question

I can only find references for small c. I assume that the capital C is for Unicode, but I'm not sure. For lower numbers, both output the same character.

Answer 1

From MSDN

%c

When used with printf functions, specifies a single-byte character; when used with wprintf functions, specifies a wide character.

%C

When used with printf functions, specifies a wide character; when used with wprintf functions, specifies a single-byte character.

Answer 2

From MSDN:

%c

type: int or wint_t 

When used with printf functions, specifies a single-byte character; when used with wprintf functions, specifies a wide character.

%C

type: int or wint_t

When used with printf functions, specifies a wide character; when used with wprintf functions, specifies a single-byte character.

more about format specifiers here

Answer 3

Note that %C isn't standard. Standard conversion for characters are:

• %c is used for a int . printf output it as it if was an unsigned char . wprintf output the result of the convertion to a wchar_t by btowc .
• %lc is used for a wint_t . printf output the result of the conversion to a multibyte string by wcrtomb . wprintf output it as if it was a wchar_t .