> Oh, yeah, I forgot to say why just printf'ing won't work.  I've got 40
> different messages to print, some have numbers in them, some display the
> time, some display temperatures, some don't.  It would be simple if they
> were all like:
>
> "10:01 AM System ON"
>
> But some of them are also like:
>
> "Soup Temperature 24510F" or
> "Error! You Bozo, shut off the power!"   or
> "Call 1-800-IMA-DUMMY for help"         and so on.  *
>
> That's why I am thinking that concatenating a string would be the right
> approach.  So far my efforts with STRCAT have produced nil for output.  For
> instance the simple code:
>
>  DO{
>      puts(*string1);
>
>      delay_ms(1000);
>
>      strcpy(string2, "A");
>      strcat(*string1, *string2);      // concatenate string1 and 'A'
---
Your strcpy is OK, but the strcat won't work.  strcat takes two pointers, but you have dereferenced them.  It will try to use what's
pointed to as a pointer (i.e. if string1[] contains "123", then strcat will try to use '1', or 0x31, as the pointer, likewise with
string2; you can't be sure what you're writing or to where you are writing it).  Use this and see if it helps:

    strcat( string1, string2 );
---
>
>  }WHILE(TRUE);
>
> which I imagined might print "A" then "AA" then "AAA"  then "AAAA" etc just
> prints a CR-LF over and over.  Phooey.
>
> --Lawrence
>
> *Humor content of messages has been increased to add interest.  Real
> messages are not this funny.
>
>
>
> ----- Original Message -----
> From: "John Pfaff" <John.Pfaff@MARCONI.COM>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Friday, July 20, 2001 9:48 AM
> Subject: Re: [PIC]: Tied up with String: OR the String Cheese Incident
>
>
> > Why not this:
> >
> > {
> >     char ampm[3] = "PM";        // This can be set to "AM" or "PM",
> depending
> > on time
> >     int Hours, Minutes;
> >
> >     printf( "%d:%02d %s", Hours, Minutes, ampm );
> > }
> >
> > or even this if you really want to build a string and perhaps use it
> > elsewhere as well
> >
> > {
> >     char string1[20]
> >     char ampm[3] = "PM";
> >     int Hours, Minutes;
> >
> >     sprintf( string1, "%d:%02d %s", Hours, Minutes, AmPm );
> >     printf( string1 );
> > }
> >
> >
> > Lawrence Lile wrote:
> > >
> > > I am perpetually confused by pointers in C, thus, I avoid them whenever
> > > possible.  (I have the same method of coping with the city bus system -
> > > don't use it)
> > >
> > > CCS has a number of string functions, which "return pointers" whatever t
> hat
> > > means.  What I'd like to accomplish is this:
> > >
> > > I want to concatenate several items into a string, then pass that string
> to
> > > PRINTF and squirt it out the RS232 port.
> > >
> > > One of the strings might be something like  "10:01 AM System ON" or " 7
> 28
> > > PM System OFF" (note the blinked colon)
> > >
> > > Here's a stab at it, prolly fulla bugs:
> > >
> > > Char string1[20];
> > > .
> > > .
> > > .
> > >
> > > STRCAT(string1, Hours);  // of course, Hours is an INT, not a string,
> how to
> > > convert to a string?
> > > STRCAT(string1, ':');         // blinky colon
> > > STRCAT(string1, Minutes); // minutes, also still an INT not a string ???
> > > STRCAT(string1, 'PM');  // does this work with a buncha letters?
> > > etc.
> > > Printf(*string1);  // ??????????
> > >
> > > Any suggestions are welcome
> > >
> > > -- Lawrence Lile
> > > Sr. Project Engineer
> > > Salton inc. Toastmaster Div.
> > > 573-446-5661 Voice
> > > 573-446-5676 Fax

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