drawing random circles

[cat82]

Hi folks,

I have written this practice code:

repeat gfx_Circle(RAND()%160, RAND()%128, RAND()%32, CYAN); pause(3000); gfx_Cls();forever

the idea is to draw a circle of random position and radius within the limits of the screen (hence 160 and 120).

With the text as it is it doesn't always print a circle (or at least it isn't visible on the screen) and sometimes it only prints out 4 dots at the points of a compus.

Can anyone tell me what is wrong with the code and explain why this doesn't work? I am very new to programming so I appologise now if I ask lots of stupid questions.

[ESPsupport]

You will end up with -ve numbers like that. Try

gfx_Circle(ABS(RAND()%160), ABS(RAND()%128), ABS(RAND()%32), CYAN);

[cat82]

great, that worked a treat. see daft things like forgetting intergers are signed is just my lack of experiance.

thanks a lot.