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

int
main (int argc, const char *argv[])
{
  char *s;

  putenv ("NAME=1");

#ifdef NO_EQUAL
  s = "NAME";
#else
  s = "NAME=";
#endif
  putenv (s);

  if (getenv ("NAME"))
    printf ("NAME=%s\n", getenv ("NAME"));
  else
    puts ("no environment variable: NAME");

  return 0;
}