HELP PLEASE! "_" - Printable Version

HELP PLEASE! "_" - Printable Version

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+--- Thread: HELP PLEASE! "_" (/showthread.php?tid=361862)

HELP PLEASE! "_" - bodey3333 - 22.07.2012

What is that " == 0) " stands for? And what is its advantages? And why does it exists in the first example but not in the second one?

Код:

"if (strcmp(cmdtext, "/msgall", true) == 0)"

Код:

"if (strcmp(cmdtext, "/msgall", true))"

Re: HELP PLEASE! "_" - Roko_foko - 22.07.2012

Код:

if(VariableOne == VariableTwo)

checks if the VariableOne equals VariableTwo.
Notice that this isn't good:

Код:

if(VariableOne = VariableTwo)

Код:

VariableOne = VariableTwo;

changes VariableOne's value to VariableTwo's value.

Why checking if it equals null(==0)? Check how strcmp works.

"if (strcmp(cmdtext, "/msgall", true))" I guess you think

Код:

if (!strcmp(cmdtext, "/msgall", true))

If so, it's the alternative way of doing the first tihing.

Re: HELP PLEASE! "_" - [KHK]Khalid - 22.07.2012

In the first code it's checking if Strcmp returns 0 and in the second code it's checking if it returns 1.

Strcmp returns:

Quote:

Originally Posted by Wiki

-1 if string1 comes before string2
1 if string1 comes after string2
0 if the strings are the same (for the matched length).

More examples with other functions like IsPlayerAdmin

pawn Код:

if(IsPlayerAdmin(playerid) == 1) // checks if IsPlayerAdmin returns 1 (Logged into rcon)
if(IsPlayerAdmin(playerid)) // checks if IsPlayerAdmin returns 1 too (Logged into rcon)
//                     //                                      //               //
if(!IsPlayerAdmin(playerid)) // checks if IsPlayerAdmin returns 0 (Not logged)
if(IsPlayerAdmin(playerid) == 0) // checks if IsPlayerAdmin returns 0 too (Not logged)

You can find more info in the wiki article about Control Structures.