[Coco] Let's say you wrote a BASIC program the user is invited to change

[Bruce W. Calkins]

On 7/10/25 12:08, Juan Castro via Coco wrote:
> For example, it solves an equation, or plots a graph, and the user is
> supposed to edit the line where the function is defined. So you print
> a message telling them they can edit line XXX for that purpose.
> 
> Or you want to say the user can change something's color by changing
> the value of variable C in line YYY.
> 
> If you renumber the program, you'll have to go back and re-edit any
> message like that, right? Well, no longer. Now you can use "GOTO nnnn"
> as an expression and print it! Like this:
> 
> https://www.dropbox.com/scl/fi/gy5svbpsycvmr1uc8c70c/GOTOasExpression.mp4?rlkey=fit9ljec12on0ri4oxq0yp0wo&st=71tbzuls&dl=0
> 
> The only change was in the expression evaluation routine. If I find
> the tokens for GOTO, I skip them and otherwise act normally. RENUM
> didn't need any changes -- whenever it finds a GOTO followed by a
> number, it changes it.
> 
> As usual, you can find the stuff here:
> https://www.dropbox.com/scl/fo/9p5ydq5hqgp4b1fbqyyif/AKnngotPgk1PLUm6kw0nn5U?rlkey=pxtfum7dzwno0ej42bfb8ucrb&st=duyykgkj&dl=0
> 
> Juan Castro
> Enviado do meu Olivetti Programma 101
> http://retropolis.com.br
> 

Why not have the user input the variables, or accept the defaults?

Seems to me encouraging the user to change the program is inviting disaster.

Bruce W.