Question

I’m trying to check the length, in digits, of a float variable, but I don’t know the correct syntax to use. I’ve looked this up and I couldn’t find an answer.

My code is a simple if statement:

if (currentNumber.digits < 3) {  //If the number has less that three digits, I don't know what to put here to get it working

    //code
}

Answer 1

#include <math.h>

//...

int digits = (int) ceil(log10(number));

The extra logic for negative numbers is left as an exercise to the reader.