how do i create a recursive function that gives the number of digits in an integer? i.e. does the same that length function does in MATLAB

 function r = length_of(n)

 end

it seems to be easy but right now i'm stuck with it

Answer 1

[Cedric]

As Wayne mentioned, recursivity in unnecessary, but if you had to implement a recursive function, you could have built something like:

 function r = length_of(n)
     if n < 10
         r = 1 ;
     else
         r = 1 + length_of(n/10) ;
     end
 end

[Zaza]

as i thought, nice and simple

thanks

Answer 2

[Wayne King]

Why recursive?

    A = 12;
    B = 1000;
    length(num2str(A))
    length(num2str(B))

[Zaza]

i had a test and that was the requirement

anyway thanks