C one-line macro that finds the length of an int `x`. [E.g. lenOfInt(12345) will return 5]

lenOfInt.c

/**
* Needs <math.h> to work as it calls the ceil() function.
* Doesn't work on neg ints without modification [see line x for example]
* Returns a short to reduce spatial complexity; modify to cast as int if needed.
*
**/
#include <stdlib.h>
#include <math.h>
#define lenOfInt(x) ((x) == 0 ? 1 : (int)(log10(abs(x)) + 1))

// example code driver

#include <stdio.h>
int main()
{
    printf("%d\n", lenOfInt(9334));
    return 0;
}