That's brilliant!

How does it work when you pass an empty array size in one dimension of an array(R[][3])?

Can someone explain to me what that for loop is?

This code is really tight and pretty. What's your strategy for making your code look so nice? Do you follow any rules or principles?

OMG

jaw dropped

Gorgeous solution. Great job!

This is THE way of solving this, thanks for sharing

This solution passes the test, but violates the condition of Kata: "Don't guess the same thing every time"!
Of course it's easy to fix.

Good gravy; so succinct!

Not shown to be a kata issue. Closing.

Nice, note that copying number is not necessary if you used strcspn instead of strtok.

hahahahahahahahahahahahahahahahahahahahahahahahahhahahahaha

this made me laugh so hard :D