Just because your solution doesn't work in all test cases. Try to figure out what is going wrong.

I don't think so. Your solution seems perfect to me. Have you got any problem in passing tests?

Why?

Simple. Round and floor functions aren't the same. For example, round(1.7) = 2, but floor(1.7) = 1.

Since the empty string has no characters, the definition of the problem is ok.

The percentage is a positive number, so the population is always increasing.

Your code is returning 3, but it should return 4 instead.

char *words_array[] is an array of strings that you have to fill with the words in the input string words.

words_array is an output parameter that does not initially contain anything meaningful. You have to allocate memory on the heap (malloc() & friends) for each word. words_array itself is necesarily already allocated, otherwise it would be impossible to pass it as a parameter.

I am trying to solve this kata in C, but for me it is not clear what I must allocate: words? words_array? or both? Can anyone help me with this?

Thanks for the hint. I was allocating with malloc. I switched to calloc and the bug was fixed.

Your code does not NULL-terminate your output, so that causes undefined behavior outside of your function.

I think there is a problem with the random tests. I'm coding in C. Take a look at what I got.

n = 9
Submitted: dokuz
Expected: �adokuz

Any idea about what is going on here?

Thanks.

Hi, whene I understand your code I really get blow mind with how your solution it's simple and also get the task done cause the kata looks really difficult .

What "2" are you talking about?