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

char *banner;

char *
create_banner ()
{
  const char *user = getenv ("USER");
  size_t len = 1 + 2 * 4 + strlen (user) + 1;
  char *b = malloc (len);
  sprintf (b, "\t|** %s **|", user);
  return b;
}

void
output_report (int nr)
{
  puts (banner);
  printf ("Number: %d\n", nr);
  printf ("\n");
}

int
main ()
{
  banner = create_banner ();
  for (int i = 1; i <= 3; i++)
    output_report (i);

  return 0;
}