dev-cpp-users

[Dev-C++] What the memser diference ?

[<hu...@cl...>]

Hei all,
<br>whats the diference between this statements : 
<br>
<br>int v[1000];
<br>memset(v,'\0',sizeof(v));
<br>
<br>and .....
<br>
<br>int v[1000];
<br>memset(v,0x00,sizeof(v));
<br>
<br>Thanks<p>Clix Rapidix - Aumente até 6X a velocidade da sua Internet

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Re: [Dev-C++] What the memser diference ?

[<or...@vp...>]

hu...@cl... wrote:
> Hei all,
> whats the diference between this statements :
> 
> int v[1000];
> memset(v,'\0',sizeof(v));
> 
> and .....
> 
> int v[1000];
> memset(v,0x00,sizeof(v));

Actually, nothing. 0x00 and '\0' means the same thing. 0x00 is simply 0 
in decimal form. '\0' means the ascii-code of the \0 character (note: 
NOT the ascii-code of '0') as far as I know, and it is also 0. So the 
behaviour of the two memset's are identical.

It depends on the context which one is more appropriate. If you wish to 
initialize a character buffer with the same characters, for example, 
with the letter 'a', then the first form is more straight-forward:

char v[1000];
memset(v,'a',sizeof(v));
/* v[1000-1] = '\0' */

But in your case, the second is better, as you initialize an integer 
array, and I suspect, that you wish to zero it out.

int v[1000];
memset(v,0,sizeof(v));

--
Greetings,
   Balázs