SCTF2014_pwn400 writeup

int sub_804874A()
{
  unsigned __int8 v1; // [sp+1Fh] [bp-9h]@2
 
  write(1, "1.New note\n", 0xBu);
  write(1, "2.Show notes list\n", 0x12u);
  write(1, "3.Show note\n", 0xCu);
  write(1, "4.Edit note\n", 0xCu);
  write(1, "5.Delete note\n", 0xEu);
  write(1, "6.Quit\n", 7u);
  write(1, "option--->> ", 0xCu);
  do
    v1 = getchar();
  while ( v1 == 10 );
  return v1;
}