// This is the INCORRECT version of good_example.cpp.

#include <stdio.h>
#include <stdlib.h>

int * bad_function()
{
  int x = 5;
  return &x; // this is illegal, may lead to the program crushing, or to bugs.
}

int main()
{
  int * a = bad_function();
  printf("a = %d\n", *a);
}