Re: [cc65-devel] c64 - getting seemingly random chars on screen

[<gr...@gm...>]

Am Mittwoch, 3. März 2021, 20:15:14 CET schrieb Michael Parson:

> I guess the next question is... why doesn't the X-16 behave the same
> way?

A bug in it's conio library perhaps? or you are "printing" somewhere else in 
memory that isnt the screen (this could also happen eg if you port this 
program to vic20, which has a much smaller screen)

> 
> As far as compiler/language bugs go, is what I'm seeing with 'cscanf()'
> expected behavior?
> 
> #include <conio.h>
> 
> int main() {
>          unsigned char name[16];
> 
>          clrscr ();
> 
>          cprintf ("what is your name? ");
>          cscanf ("%s", &name);
>          cprintf ("hello, %s\n", name);
> 
>          return 0;
> }
> 
> Start typing something at the prompt, hit backspace and it treats it
> like a return instead?

It's probably expected, scanf doesnt really handle "editing". i'd generally 
avoid using it except for "testcode" - for "production code" you probably want 
a custom textentry function that handles editing properly.

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