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Print formatted wide-character output into a string
#include <wchar.h>
int swprintf( wchar_t * ws,
size_t n,
const wchar_t * format,
... );
- ws
- A pointer to the buffer where you want to function to store the formatted
string.
- n
- The maximum number of wide characters to store in the buffer, including
a terminating null character.
- format
- A wide-character string that specifies the format of the output.
The formatting string determines what additional arguments you need to
provide.
For more information, see
printf().
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The swprintf() function is similar to
fwprintf()
except that swprintf() places the generated output into the
wide-character array pointed to by buf, instead of writing it to
a file.
A null character is placed at the end of the generated character string.
The swprintf() function is the wide-character version of
sprintf().
The number of wide characters written, excluding the terminating
NUL, or a negative number if an error occurred
(errno
is set).
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Read the Caveats |
Thread |
Yes |
It's safe to call this function in a signal handler if the data isn't
floating point.
errno,
fprintf(),
fwprintf(),
printf(),
snprintf(),
sprintf(),
vfprintf(),
vfwprintf(),
vprintf(),
vsnprintf(),
vsprintf(),
vswprintf(),
vwprintf(),
wprintf()
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