sprintf, snprintf - format characters in memory
#include <sys/ddi.h> char *sprintf(char *buf, const char *fmt...);
size_t snprintf(char *buf, size_t n, const char *fmt...);
Solaris DDI specific (Solaris DDI).
The sprintf() function builds a string in buf under the control of the format fmt. The format is a character string with either plain characters, which are simply copied into buf, or conversion specifications, each of which converts zero or more arguments, again copied into buf. The results are unpredictable if there are insufficient arguments for the format; excess arguments are simply ignored. It is the user's responsibility to ensure that enough storage is available for buf.
The snprintf() function is identical to sprintf() with the addition of the argument n, which specifies the size of the buffer referred to by buf. The buffer is always terminated with the null byte.
Each conversion specification is introduced by the % character, after which the following appear in sequence:
An optional value specifying a minimum field width for numeric conversion. The converted value will be right-justified and, if it has fewer characters than the minimum, is padded with leading spaces unless the field width is an octal value, then it is padded with leading zeroes.
An optional l (ll) specifying that a following d, D, o, O, x, X, or u conversion character applies to a long (long long) integer argument. An l (ll) before any other conversion character is ignored.
A character indicating the type of conversion to be applied:
The sprintf() function returns its first argument, buf.
The snprintf() function returns the number of characters formatted, that is, the number of characters that would have been written to the buffer if it were large enough. If the value of n is less than or equal to 0 on a call to snprintf(), the function simply returns the number of characters formatted.
The sprintf() and snprintf() functions and can be called from user, interrupt, or kernel context.
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Created 1996-2023 by Maxim Chirkov
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