Hide password input on terminal

Question

I want to mask my password while writing it with *. I use Linux GCC for this code. I know one solution is to use getch() function like this

Answer 1

Your method is correct, however you'll need to turn off terminal echo while the password is being entered:

#include 

void echo_off()
{
    struct sgttyb state;
    (void)ioctl(0, (int)TIOCGETP, (char *)&state);
    state.sg_flags &= ~ECHO;
    (void)ioctl(0, (int)TIOCSETP, (char *)&state);
}

void echo_on()
{
    struct sgttyb state;
    (void)ioctl(0, (int)TIOCGETP, (char *)&state);
    state.sg_flags |= ECHO;
    (void)ioctl(0, (int)TIOCSETP, (char *)&state);
}

Instead of getch(), why not just use getc() instead?