The last character of a string

Code:

---

int main()
{
  int lastDigit;
  char num1[3] = "123";
  lastDigit = strlen(num1) - 1;
  printf("%c", num1[lastDigit]);
  return 0;
}

---

Guys, any idea why this code doesnt work?
I want to get the last character of the string. In that case its "3"

Because
char num1[3] = "123";
does NOT have a \0 at the end of it for strlen() to do it's thing properly.

Write
char num1[4] = "123";
or better, let the compiler do the work
char num1[] = "123";