Best way to check if a character array is empty

Question

Which is the most reliable way to check if a character array is empty?

char text[50];

if(strlen(text) == 0) {}

or

if(text[         


        

Answer 1

The second method would almost certainly be the fastest way to test whether a null-terminated string is empty, since it involves one read and one comparison. There's certainly nothing wrong with this approach in this case, so you may as well use it.

The third method doesn't check whether a character array is empty; it ensures that a character array is empty.