$a=6;
$a--;
1 << $a;
结果打印出来是44542208...不知道怎么回事。

代码: 全选
Script started on Tue 09 Feb 2010 12:31:06 PM CST
chenfengyuan@darkstar:~$ perl -wle '$a=6;$a--;print 1 << $a;'
32
chenfengyuan@darkstar:~$ exit
exit
Script done on Tue 09 Feb 2010 12:31:10 PM CST