[PATCH] Add example to rand.3

[Jonny Grant <jg@xxxxxxxx>]

Hi Alejandro
Please find below a patch.

2022-12-26  Jonathan Grant <jg@xxxxxxxx>
	* man3/rand.3: Add example to rand.3 seed with time(NULL)


>From 2d4501354ea6c465173fe6c089dfbcc80393a644 Mon Sep 17 00:00:00 2001
From: Jonathan Grant <jg@xxxxxxxx>
Date: Mon, 26 Dec 2022 21:48:17 +0000
Subject: [PATCH] add rand.3 example

Signed-off-by: Jonathan Grant <jg@xxxxxxxx>
---
 man3/rand.3 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/man3/rand.3 b/man3/rand.3
index 572471749..c1542fb56 100644
--- a/man3/rand.3
+++ b/man3/rand.3
@@ -164,6 +164,20 @@ when good randomness is needed.
 .BR random (3)
 instead.)
 .SH EXAMPLES
+
+A possibly useful seed value would be by calling
+.BR rand ()
+with the result of
+
+.BR time ()
+as that varies with every call
+
+.EX
+srand((unsigned int)time(NULL));
+.EE
+.in
+.PP
+
 POSIX.1-2001 gives the following example of an implementation of
 .BR rand ()
 and
-- 
2.37.2