4.4BSD/usr/src/contrib/perl-4.036/t/base/cond.t

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#!./perl

# $Header: cond.t,v 4.0 91/03/20 01:48:54 lwall Locked $

# make sure conditional operators work

print "1..4\n";

$x = '0';

$x eq $x && (print "ok 1\n");
$x ne $x && (print "not ok 1\n");
$x eq $x || (print "not ok 2\n");
$x ne $x || (print "ok 2\n");

$x == $x && (print "ok 3\n");
$x != $x && (print "not ok 3\n");
$x == $x || (print "not ok 4\n");
$x != $x || (print "ok 4\n");