Thread: Why would these be giving two different results though they point to the same place?

A bit confused per normal. Both of the isdigits should be pointing to the same place regardless if it's using [0] to call the array or [m] which is currently set to 0? Why would they be giving me different results? When I compile and run I get the following for the following inputs:

if I put in 1 they both return 1
if I put in 1andaword (isdigit(s[m])) returns a 0 but (isdigit(s[0])) returns a 1. same if I put 1 andawordwithaspacebetween?

Code:

int main (void) {
    int charcount = 0;
    int integers = 0;
    int integers2 = 0;
    int m = 0;
    char s[] = {0};
    int len = 0;
    printf("Enter a string:\n");
    scanf("%256[^\n]", s);
    len = strlen(s);
    if (isdigit(s[m])) {
       integers = integers + 1;
    }
    printf("there are %d integers in your string\n\n", integers);
    if (isdigit(s[0])) {
        integers2 = integers2 + 1;
    }
    printf("there are %d integers in your string", integers2);
    return 0;
}