text: #include <stdio.h>
  #include "ex22.h"
  #include "dbg.h"
  
  int THE_SIZE = 1000;
  
  static int THE_AGE = 37;
  
  int get_age()
  {
    return THE_AGE;
  }
  
  void set_age(int age)
  {
    THE_AGE = age;
  }
  
  double update_ratio(double new_ratio)
  {
    static double ratio = 1.0;
  
    double old_ratio = ratio;
    ratio = new_ratio;
  
    return old_ratio;
  }
  
  void print_size()
  {
    log_info("I think size is: %d", THE_SIZE);
  }