#include <stdio.h>
#include <math.h>
/* Define doubling_time_aux and doubling_time first */
double doubling_time_aux ( ) {
  /* Following line DEFECTIVE! */
  return log (2.0) / log (1.0 + r);
}
double doubling_time (double r) {
  r = r / 100.0;
  return doubling_time_aux ( );
}
/* Then, define main */
main ( ) {
  printf ("The doubling time is %f.\n", doubling_time (5.0));
  /* Following line DEFECTIVE! */
  printf ("The value r is %f.\n", r);
}