Right answer is as follows: 1,3 are right, 2 is wrong. Since the second return a pointer which point to a temporary object. So when the function returns, the pointer becomes a suspending pointer.

guest (whois)
(#70838@0)
2001-5-15 -05:00

回到话题: which one is right?

回到论坛: HOME枫下论坛枫下论坛主坛工作学习IT技术讨论

URL:   
http://www.rolia.net/zh/post.php?f=0&p=70838