On Thu, 19 Oct 2000, Lawrence Lile wrote:

> I am trying to printf a series of strings in a program in CCS C on a
> PIC16C715  (my circuit prints to a serial LCD)  something like this:
>
> Switch (state){
>     Case 0:
>             Printf("Pancakes");
>             Break();
>     Case 1:
>             Printf("Eggs");
>             break();
>     Case 3:
>             Printf("Bacon");
>             break();
>     Case 4:
>             Printf ("Biscuits");
>             Break;
>     etc. etc. etc.
> }
>
> (actually it is about a dozen cases - you get the idea.)

Yeah, that will take a LOT of space.  I just finished a project with a lot
of string handling, and it's a beastly size.

> The entire Switch Case Printf routine takes up a whopping 700 bytes in my
> program.  I thought it might be less memory intensive to do something like
> this, but I can't figure out the correct syntax:
>
> char Stuff[16];
>
> Switch (state){
>     Case 0:
>             Stuff ="Pancakes";   // this is not the proper syntax - won't
> compile
>             Break();
>     Case 1:
>             Stuff="Eggs";
>             break();
>     Case 3:
>             Stuff = "Bacon";
>             break();
>     Case 4:
>             Stuff = "Biscuits";
>             Break;
> }
> printf("%C", stuff);   // this is not the proper syntax  - won't compile
>
>
>
> You get the idea - set up a variable with the proper text string, then call
> ONE printf statement at the end.   What is the correct way to achieve this
> result?
>
> This is actually two questions:
>
> 1.  How do you set an array to a string?

Switch (state){
    Case 0:
            strcpy(Stuff,"Pancakes");
            Break();
    Case 1:
            strcpy(Stuff,"Eggs");
            break();
    Case 3:
            strcpy(Stuff,"Bacon");
            break();
    Case 4:
            strcpy(Stuff,"Biscuits");
            Break;
}
puts(stuff);

You can do puts(Stuff) or use printf(Stuff).  puts() is samller in this
case; sometimes it's not.  It will put a CR/LF after the output though.
By the way -- in my quick test, strcpy() in the switch/case bit will save
you 2 bytes of code space per case over printf().  Oddly, though, if I
used all puts() calls it was larger than using printf()!  Go figure.  A
lot of the time I find I can do something one of several ways; I usually
try all of them and see which one the compiler likes best, as evidenced by
the smallest code.  Yeah, I know, that may not be fastest; sue me, I
usually don't care.

Dale
---
The most exciting phrase to hear in science, the one that heralds new
discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
                -- Isaac Asimov

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