Size of String array

Question

I am trying to find out the size of an array like this:

    String days[3] = { "Mon", "Tue", "Wed" };
Serial.printf("Size of array: %2d\n", sizeof(days));
for (int i = 0; i < sizeof(days); i++) {
    Serial.print(days[i]);
}

The result of the code above is 36 which is incorrect.

Do I have any other options considering that I don't know the size of the array to begin with?

Answer 1

No, the result is correct, you're just interpreting it incorrectly. If you want the number of elements in a statically-allocated array use:

sizeof(somearray) / sizeof(somearray[0])