[Solved] folder name as variable

Pihas · Post by **Pihas** » Wed Jul 01, 2009 2:11 am

How corectly to do it ? I can't find out :/
(C programing language + oslib)
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int folder_name_variable;

folder_name_variable = Brew;

Picture = oslLoadImageFile("Root/..folder_name_variable../test.png", OSL_IN_RAM, OSL_PF_5551);

m0skit0 · Post by **m0skit0** » Wed Jul 01, 2009 2:29 am

Better learn to program C first...

Producted · Post by **Producted** » Wed Jul 01, 2009 2:59 am

^That.
One of the first things you should learn is; what variables are and what they can do.

http://en.wikipedia.org/wiki/C_variable ... clarations
This might help.

Pihas · Post by **Pihas** » Wed Jul 01, 2009 3:10 am

I am asking just to write one simple situacion and you bring me link to wiki and advise to learn C.... Is it so hard?...

coolkehon · Post by **coolkehon** » Wed Jul 01, 2009 3:15 am

theres alot you need to learn but here

create a temporary collection or chars and use sprintf or snprintf look them up a good place is cpprefrence.com and cprogramming.com

svxs · Post by **svxs** » Wed Jul 01, 2009 4:03 am

int folder_name_variable;

folder_name_variable = Brew;

Picture = oslLoadImageFile("Root/..folder_name_variable../test.png", OSL_IN_RAM, OSL_PF_5551);

It's tough to see what you're trying to do. Is folder_name_variable really an integer, or should it be a string? What is the type of Brew?

The most confusing thing is whether or not you want the _name_ of the variable as a token in your string, or if you want the _contents_ of the variable in the string. In the former case, you're not going to be able to pull that off without some mightily obscure extension to your compiler unless you want to keep track of it somewhere else by yourself.

But even then, it doesn't make sense. How would you address the name of the variable? You'd logically need to know its name in advance anyway. I imagine the obscurity of it is a mitigating factor in ISO 9899's decision to not support that. :)

In the ladder case where you'd want the contents of the variable to show up in your string, you could use sprintf() to write a formatted string to a buffer and use that.

m0skit0 · Post by **m0skit0** » Wed Jul 01, 2009 5:05 am

I think he's trying to do something like this:

Code: Select all

char* strfolder_path = "Brew";
/* No more than 80 characters in path */
char* strpath&#91;80&#93; = "Root/";

strcat&#40;strpath, strfolder_path&#41;;
strcat&#40;strpath, "/test.png"&#41;;

Picture = oslLoadImageFile&#40;strpath, OSL_IN_RAM, OSL_PF_5551&#41;;

Maybe... :/

Pihas · Post by **Pihas** » Wed Jul 01, 2009 5:09 am

Thx m0skit0 that was exactly what i wanted to do . You saved my life time :-)

svxs, i am learnign programing by self and i don't know a lot things, even basics. I know other languages like PHP, LUA but have diferent sintax then C :/

J.F. · Post by **J.F.** » Wed Jul 01, 2009 7:09 am

You're making things harder on yourself by trying to learn both the PSP and C at the same time. We recommend people learn C, THEN move on to programming the PSP. It's easier, and means less basic questions here. We don't teach C, so if your question is C related, you're more likely to get razzed than to get an answer.