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what is the difference? - Printable Version

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+--- Thread: what is the difference? (/showthread.php?tid=437953)


what is the difference? - Don_Cage - 18.05.2013

Some people does like this
pawn Код:
if(strcmp(cmd, "/cmd", true) == 0)
and some people do like this
pawn Код:
if(!strcmp(cmd, "/cmd", true) == 0)
what is the difference between putting the '!' and not doing it in just that place?

EDIT: and also what is the '== 0' about? I mean you can still make exact cmd without the '== 0'

Re: what is the difference? - SchurmanCQC - 18.05.2013

If the '!' is present, you do not need '== 0'. I believe having both is a double negative.

! means either 0 or false.
When ! is not present, it means equal to 1 or true.

You can void both of the above by including '== (VALUE)'

Re: what is the difference? - Don_Cage - 18.05.2013

So i must either do
pawn Код:
if(!strcmp(cmd,"/cmd",true))
or
pawn Код:
if(strcmp(cmd,"/cmd",true) == 0)
or can i do
pawn Код:
if(strcmp(cmd,"/cmd",true))
and remove both?

Re: what is the difference? - SchurmanCQC - 18.05.2013

Quote:
Originally Posted by Don_Cage
Посмотреть сообщение
So i must either do
pawn Код:
if(!strcmp(cmd,"/cmd",true))
or
pawn Код:
if(strcmp(cmd,"/cmd",true) == 0)
or can i do
pawn Код:
if(strcmp(cmd,"/cmd",true))
and remove both?
You can use the first or second.

The third will see if the string is not equal, so it will execute if you type anything except /cmd.

This all depends on what strcmp returns.

STRCMP returns false or 0 if the string is equal or one is empty.

STRCMP returns true or 1 if string 1 comes after string 2
STRCMP returns -1 if string 2 comes after string 1

Re: what is the difference? - Don_Cage - 18.05.2013

Ok, well that awnsered my question. Thank you