swprintf()
QNX SDP8.0C Library ReferenceAPIDeveloper
Print formatted wide-character output into a string
Synopsis:
#include <wchar.h>
int swprintf( wchar_t * ws,
size_t n,
const wchar_t * format,
... );
Arguments:
- 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().
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
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().
Returns:
The number of wide characters written, excluding the terminating NUL, or a negative number if an error occurred (errno is set).
Errors:
- EOVERFLOW
- An attempt was made to write a number of bytes that exceeds the allowable limit.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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