%indentSpaces: number => display indent using spaces
%Author: James Atlas CISC106, TA Bootsy Collins
%Description: prints an indentation of spaces, length given by the
%parameter.
%
%Examples: (output between ''s)
%indentSpaces(3) => '   ' 
%indentSpaces(0) => ''
%indentSpaces(5) => '     '
function [] = indentSpaces(len)
  if (len > 0)
    fprintf(' ');
    indentSpaces(len - 1);
  end