Enums and Arrays - Printable Version

Enums and Arrays - Printable Version

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+---- Thread: Enums and Arrays (/showthread.php?tid=226030)

Enums and Arrays - Th3Angel - 14.02.2011

I created an Enum and some variables are arrays. When I try to reset these variables to "", I get an error.

pawn Код:

enum playerInfo
{
    var1[16],
    var2[145],
    var3[20];
}

new pInfo[MAX_PLAYERS][playerInfo];

//In some callback
pInfo[playerid][var1] = ""; //line 1093
pInfo[playerid][var2] = ""; //line 1094
pInfo[playerid][var3] = ""; //line 1095

pawn Код:

(1093) : error 047: array sizes do not match, or destination array is too small
(1094) : error 047: array sizes do not match, or destination array is too small
(1095) : error 047: array sizes do not match, or destination array is too small

Re: Enums and Arrays - Mauzen - 14.02.2011

This is a pawn entity

Use strcat instead, https://sampwiki.blast.hk/wiki/Strcat

pawn Код:

strcat(pInfo[playerid][var1], "");

Or: (dont know if it works, just an idea)

pawn Код:

pInfo[playerid][var1][0] = EOF;
//or
pInfo[playerid][var1][1] = EOF;

If you got some time, feel free to test it, would be interesting to know if it works, as this would be much faster than strcat.
Basically, EOF is a symbol that tells pawn that the string is over here. Every string has this at the end, this is why
new txt[32];
could save a maximum of 31 chars.

Re: Enums and Arrays - Th3Angel - 14.02.2011

Quote:

Originally Posted by Mauzen

This is a pawn entity

Use strcat instead, https://sampwiki.blast.hk/wiki/Strcat

pawn Код:

strcat(pInfo[playerid][var1], "");

Or: (dont know if it works, just an idea)

pawn Код:

pInfo[playerid][var1][0] = EOF;
//or
pInfo[playerid][var1][1] = EOF;

Wouldn't strcat just join a variable with ""?
Like, pInfo[playerid][var1] = "Hello";
Wouldn't strcat just make it "Hello "?
As for EOF, it turns the first character of the string into a я.

Re: Enums and Arrays - PowerPC603 - 14.02.2011

pawn Код:

pInfo[playerid][var1] = "test";

Even this gives me: error 047: array sizes do not match, or destination array is too small.

To store a string, I always use format:

pawn Код:

format(pInfo[playerid][var1], sizeof(pInfo[playerid][var1]), "test");

If you would print this string using:

pawn Код:

print(pInfo[playerid][var1]);

This would print: "test" (without the ").

To clear a string, I use 0:

pawn Код:

pInfo[playerid][var1] = 0;

Printing it again would print: "<null>" (without the ").

Re: Enums and Arrays - Th3Angel - 14.02.2011

Thanks Mauzen and PowerPC603.
I still wonder though, why I can't use pInfo[playerid][var1] = ""; when I can do it on this variable.

pawn Код:

new msg[128];
msg = "Hello";
msg = "";

Re: Enums and Arrays - Mauzen - 14.02.2011

Quote:

Originally Posted by Th3Angel

Wouldn't strcat just join a variable with ""?
Like, pInfo[playerid][var1] = "Hello";
Wouldn't strcat just make it "Hello "?
As for EOF, it turns the first character of the string into a я.

Oh ok, I will have to read some things again then.

@PowerPC603: Hm, never tried it with a 0

The problem why you cant use it like this:

pawn Код:

new msg[128];
msg = "Hello";
msg = "";

is caused by the way pawn handles strings.
A String is just a integer-array, with one int for each character. And if you use the normal '=' operator, pawn tries to write a string (array, e.g. "Hello", length 5) into another array (msg[128]). But as you can see, these both array do not have the same size, so you cant just set the on‌e=the other. This gives you the error then.

Re: Enums and Arrays - Th3Angel - 14.02.2011

Quote:

Originally Posted by Mauzen

Oh ok, I will have to read some things again then.

@PowerPC603: Hm, never tried it with a 0

The problem why you cant use it like this:

pawn Код:

new msg[128];
msg = "Hello";
msg = "";

Actually you can use it like that. I've used it like that many times and it works and compiles fine with no errors. But I get what you're saying.