vscnprintf — Format a string and place it in a buffer
int vscnprintf ( | char * buf, |
size_t size, | |
const char * fmt, | |
va_list args) ; |
char * buf
The buffer to place the result into
size_t size
The size of the buffer, including the trailing null space
const char * fmt
The format string to use
va_list args
Arguments for the format string
The return value is the number of characters which have been written into
the buf
not including the trailing '\0'. If size
is == 0 the function
returns 0.
If you're not already dealing with a va_list consider using scnprintf
.
See the vsnprintf
documentation for format string extensions over C99.