Thread: faq: cached input with mygetch()

So I'm trying to put together a little text game at school on their redhat machines, right? I'm using a char buffer with system("clear") to write to the screen and mygetch() from the faq to get input.

Code:

int mygetch() {
  struct termios oldt,
                 newt;
  int            ch;
  tcgetattr( STDIN_FILENO, &oldt );
  newt = oldt;
  newt.c_lflag &= ~( ICANON | ECHO );
  tcsetattr( STDIN_FILENO, TCSANOW, &newt );
  ch = getchar();
  tcsetattr( STDIN_FILENO, TCSANOW, &oldt );
  return ch;
}

This function does what I need, except it waits for keyboard input before returning a value. Is there any way to get it to return like 0 or something when there's no input, or maybe a whole other function that does that?