Thread: Standard bioskey function

Hi,

I have faced the following code, can you help me to write a standard version of it:

Code:

struct timeval tv;

int bioskey() {
    fd_set readfds;


    FD_ZERO (&readfds);
    FD_SET (fileno(stdin), &readfds);
    tv.tv_sec=0; tv.tv_usec=0;
    select(16, &readfds, 0, 0, &tv);


    return (FD_ISSET(fileno(stdin), &readfds));
}

I get:

Code:

error: call to undeclared function 'fileno';

I found this from stackoverflow:

Code:

int bioskey(void)
{
    //struct timeval tv = { 0L, 0L };
    fd_set fds;
    FD_ZERO(&fds);
    FD_SET(0, &fds);
    return select(1, &fds, NULL, NULL, &tv) > 0;
}