Why is 0 divided by 0 an error?

Question

I have come across this problem in a calculation I do in my code, where the divisor is 0 if the divident is 0 too. In my code I return 0 for that case. I am wondering, while div

Answer 1

Another explanation of why 0/0 is undefined is that you could write:

0/0 = (4 - 4)/0 = 4/0 - 4/0

And 4/0 is undefined.