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- <html>
- <head>
- <title>snprintf</title>
- <body bgcolor=#ffffff>
- <h2 align=center>snprintf</h2>
- <h4 align=center>OS/161 Reference Manual</h4>
- <h3>Name</h3>
- snprintf - print formatted text to string
- <h3>Library</h3>
- Standard C Library (libc, -lc)
- <h3>Synopsis</h3>
- #include <unistd.h><br>
- <br>
- int<br>
- snprintf(char *<em>buf</em>, size_t <em>buflen</em>,
- const char *<em>format</em>, ...);<br>
- <br>
- int<br>
- vsnprintf(char *<em>buf</em>, size_t <em>buflen</em>,
- const char *<em>format</em>, va_list);<br>
- <h3>Description</h3>
- snprintf performs <A HREF=printf.html>printf</A>-style formatting on
- the string <em>format</em> and subsequent arguments. The resulting
- string is placed in <em>buf</em>, which is a memory area at least
- <em>buflen</em> bytes long. A null terminator is always added to
- <em>buf</em>; the space for this is presumed to be counted in
- <em>buflen</em>.
- <p>
- vsnprintf is the same as snprintf, except that the subsequent
- arguments are presumed to have already been collected using the
- <A HREF=stdarg.html>stdarg</A> facility.
- <p>
- <h3>Return Values</h3>
- snprintf and vsnprintf return the number of characters printed.
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