#!./perl
print "1..4\n";
# very basic tests of while
$x = 0;
while ($x != 3) {
    $x = $x + 1;
}
if ($x == 3) { print "ok 1\n"; } else { print "not ok 1\n";}
$x = 0;
while (1) {
    $x = $x + 1;
    last if $x == 3;
}
if ($x == 3) { print "ok 2\n"; } else { print "not ok 2\n";}
$x = 0;
while ($x != 3) {
    $x = $x + 1;
    next;
    print "not ";
}
print "ok 3\n";
$x = 0;
while (0) {
    $x = 1;
}
if ($x == 0) { print "ok 4\n"; } else { print "not ok 4\n";}