Is there a way for only numbers to be entered?

ShadowWren

I'm making a times table game for school, and I was wondering if when the user puts in an answer to a question, can it recognize if the answer is a number, and not a letter. So far, I've made it so it recognizes if the answer is correct (Or incorrect).

Any help is appreciated.

drmcw

https://scratch.mit.edu/discuss/topic/56380/

Last edited by drmcw (June 30, 2016 05:34:30)

asivi

if <((answer) mod (answer)) = [0]> then
..I's a number...::grey
end

deck26

asivi wrote:

if <((answer) mod (answer)) = [0]> then
..I's a number...::grey
end

Fails for zero though.

asivi

deck26 wrote:
asivi wrote:
if <((answer) mod (answer)) = [0]> then
..I's a number...::grey
end
Fails for zero though.

if <<((answer) mod (answer)) = [0]> or < (answer) = [0]>>then
..I's a number...::grey
end

deck26

You could also create an on-screen keypad so your input is coming from there rather than an ask block.

Not too difficult, when the sprite is clicked compare the mouse x and y with the x and y position of the sprite to work out which ‘key’ is pressed. Or use separate sprites but I prefer the single sprite method.

ShadowWren

Thanks heaps for all the suggestions!

deck26

In case it helps, here's a numeric keypad https://scratch.mit.edu/projects/115261213/

yclee0206

What about this? I used this somewhere in my projects.

If ((answer) =((answer) *[1]))
It's a number
End

If answer is not a number, answer*1 will return as zero, and that is not equal to answer.

Last edited by yclee0206 (June 30, 2016 12:05:42)

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