Is using string.length() in loop efficient?

Question

For example, assuming a string s is this:

for(int x = 0; x < s.length(); x++)

better than this?:

int length         


        

Answer 1

Is s.length() inline and returns a member variable? then no, otherwise cost of dereferencing and putting stuff in stack, you know all the overheads of function call you will incur for each iteration.