Linux cryptographic program using the termios Structure

The following is an excerpt from beginning Linux programming.

# Include <termios. h>
# Include <stdio. h>
# Include <stdlib. h>

# Define password_len 8
Int main ()
{
Struct termios its, newits;
Char password [password_len + 1];

Tcgetattr (fileno (stdin), & Its );

Newits = its;

Newits. c_lflag & = ~ Echo;

Printf ("Enter Password :");

If (tcsetattr (fileno (stdin), tcsaflush, & newits )! = 0)
{
Fprintf (stderr, "cocould not set attributes \ n ");
}
Else
{
Fgets (password, password_len, stdin );
Tcsetattr (fileno (stdin), tcsanow, & Its );
Fprintf (stdout, "\ Nyou enter % s \ n", password );
}
Exit (0 );
}
Explanation: X & = ~ Flag is used to identify the bit defined by the flag Flag in variable X.