Is it good for the challenge?

Question

Updated GRAPHIC version
https://code.sololearn.com/Wdkm7CGt4PJo/?ref=app

I think it’s a nice try, do you?
🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻🤙🏻

Answer 1

Cool visuals on your code Alberto!

This function took me a few days to work out. I was trying to find a general formula to find the number of squares a knight can move on any square. You call it as follows:

knight_function('c', 3), and it will tell you how many moves a knight can make at C3.

int knight_function2(char file, int rank)
{
double x=fabs((file-'a')-3.5),y=fabs(4.5-rank);
return x<=1.5&&y<=1.5?8:(int)round(2*(5.7-sqrt(x*x+y*y)));
}

https://code.sololearn.com/cd2qp3yOK86v/#c