'\" t .\" Title: sprintf .\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] .\" Generator: DocBook XSL Stylesheets v1.79.1 .\" Date: January 2017 .\" Manual: Basic C Library Functions .\" Source: Kernel Hackers Manual 4.8.15 .\" Language: English .\" .TH "SPRINTF" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Basic C Library Functions" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" sprintf \- Format a string and place it in a buffer .SH "SYNOPSIS" .HP \w'int\ sprintf('u .BI "int sprintf(char\ *\ " "buf" ", const\ char\ *\ " "fmt" ", " "\&.\&.\&." ");" .SH "ARGUMENTS" .PP \fIbuf\fR .RS 4 The buffer to place the result into .RE .PP \fIfmt\fR .RS 4 The format string to use @\&.\&.\&.: Arguments for the format string .RE .PP \fI\&.\&.\&.\fR .RS 4 variable arguments .RE .SH "DESCRIPTION" .PP The function returns the number of characters written into \fIbuf\fR\&. Use \fBsnprintf\fR or \fBscnprintf\fR in order to avoid buffer overflows\&. .PP See the \fBvsnprintf\fR documentation for format string extensions over C99\&. .SH "COPYRIGHT" .br