Finding the last 4 characters in a word

I need to check for the last 4 characters in a list of words and if they are any of the following:

ac1
ac2
ac3
ac4
...and so on

then I need to say "ac found"

list = "forgottenac1","tomorrowac7","wallac1"

Is there some way to do this?

Try something like...

llGetSubString(YourString, llStringLength(YourString)-4, -1);

But in the example you give, ac1, ac2, ect... Looks like the last 3 characters of the string to me, so I'd change the -4 in the line above to -3...

just FYI

llStringLength(YourString)-4

wont work quite rite you need a space between - and the number so it will subtract

-4 = (negitive) 4
- 4 = (minus) 4

integer check_for_acX( list List ) {

    integer idx = 0;
    string word;
    while( (word = llList2String( List, idx )) ) {
        
        if( llStringLength( word ) < 3 ) jump continue;    // not long enough to even fit the command
        string end = llGetSubString( word, -3, -1 );
        if( llGetSubString( end, 0, 1 ) != "ac" ) jump continue;    // doesn't start with 'ac'
        integer digit = (integer)llGetSubString( end, -1, -1 );
        if( digit ) return digit; // last char actually is a positive number
    
        @continue; // because it's not part of syntax --;
        ++idx;
    }
    return 0; // end of list reached and still no match was found
}

this presumes you're looking just for commands that end with ac1-ac9, because it's what the description sounds like... if you want to check for things like ac1-ac99 then it gets more tricky since you can no longer rely on fixed spots to extract substrings from, and stuff.

I'm geekiest bastard here. Ner Ner!!

There's no need to get the string length:

LastFour=llGetSubString(Word,-4,-1)


Using negative values causes the function to count backwards from the end of the source string.


Don't listen to the other two guys. They've obviously been having sexual intercourse or something and lost their geeky edge.

lol

Close, I sprained my geeky edge last week, but during a virtual boating accident. Don't be putting crazy notions into peoples heads about me having a sex life outside of SL, thats just plain nonsense...

Change the naming scheme to ac01, ac02, ... ac99.

Aye, if you don't mind dumping the extra work on the user then it's the best option. I just like to keep the stuff friendly to end receiver who will have to put up with it, i guess ^^;

You could use llGetSubString to grab the last 2 characters, and then if the first one of those characters is a "c" you know your number is 1-9, and we want only the last character of the string. Otherwise if the 2nd to last character is not c and is a number, it's 10-99 so we want the last 2 characters...

Or, you know, he could go for the simple fix and just name them ac01, ac02, ... ac99

I know I know... blasphemy.... doing something the easy way!