五、Perl条件语句

发布时间：2020-12-16 00:06:14 所属栏目：大数据来源：网络整理

导读：一、if语句例如： if ($name gt 'fred') {print "'$name' comes after 'fred' in sorted order.n";} 同样也有else： if ($name gt 'fred') {print "'$name' comes after 'fred' in sorted order.n";} else {print "'$name' does not come after 'fred'.n

一、if语句
例如：

if ($name gt 'fred') {
	print "'$name' comes after 'fred' in sorted order.n";
}

同样也有else：

if ($name gt 'fred') {
	print "'$name' comes after 'fred' in sorted order.n";
} else {
	print "'$name' does not come after 'fred'.n";
	print "Maybe it's the same string,in fact.n";
}

二、while语句
例如：

$count = 0;
while ($count < 10) {
	$count += 2;
	print "count is now $count.n";	# 程序将依次打印出2,4,6,8,10
}

（编辑：李大同）

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