NULL == 0？ [英] NULL==0?

问题描述

这些是等价的：


char text [];


if（text == NULL）{}

if（text == 0）{}


谢谢，

Q

Hi,

Are these equivalent:

char text[];

if(text==NULL){}
if(text==0){}

Thank you,
Q

推荐答案

" Quantum" < no ***** @ address.comWrote in message

news：6N ****************** @ newsfe1-gui.ntli。 net ...

"Quantum" <no*****@address.comwrote in message
news:6N******************@newsfe1-gui.ntli.net...

这些是等价的：


char text [];


if（text == NULL）{}

if（text == 0）{}

>
谢谢，

Q

Hi,

Are these equivalent:

char text[];

if(text==NULL){}
if(text==0){}

Thank you,
Q

虽然它来自C faq它解决了你的问题
http://c-faq.com/null/index.html


Serafeim

Although it''s from the C faq it addresses your question
http://c-faq.com/null/index.html

Serafeim

Papastefanos Serafeim写道：

Papastefanos Serafeim wrote:

" ;量子" < no ***** @ address.comWrote in message

news：6N ****************** @ newsfe1-gui.ntli。 net ...

"Quantum" <no*****@address.comwrote in message
news:6N******************@newsfe1-gui.ntli.net...

>

这些是等价的：

char text [];

if（text == NULL）{}
if（text == 0）{}

谢谢，
Q

>Hi,

Are these equivalent:

char text[];

if(text==NULL){}
if(text==0){}

Thank you,
Q

虽然它来自C faq它解决了你的问题
http://c-faq.com/null/index.html

Serafeim

Although it''s from the C faq it addresses your question
http://c-faq.com/null/index.html

Serafeim

好​​的，谢谢。 :)

Q

Ok, thanks. :)
Q

Quantum写道：

Quantum wrote:

这些是等价的：


char text [];


if（text == NULL）{}

if（text == 0）{}

Are these equivalent:

char text[];

if(text==NULL){}
if(text==0){}

是的，但是，因为text是一个数组，它永远不会是NULL ...

-

Nick Keighley

yes, but, since text is an array it can never be NULL...
--
Nick Keighley

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