I am doing a project in C program which requires to type in password in Unix terminal. Does anybody know how to shade or not output any words typed by user in the terminal?

I use the function scan() to read typing from user. Thanks in advance.

sorry Driver, i really can't figure out the solution for my question with the code below that you posted. Would you please explain more with a simple code to do that? Thanks.

#include <termios.h>
#include <stdio.h>

int
getch(void) {
    struct termios old;
    struct termios new;
    int rc;
    if (tcgetattr(0, &old) == -1) {
        return -1;
    }
    new = old;
    new.c_lflag &= ~(ICANON | ECHO);
    new.c_cc[VMIN] = 1;
    new.c_cc[VTIME] = 0;
    if (tcsetattr(0, TCSANOW, &new) == -1) {
        return -1;
    }
    rc = getchar();
    (void) tcsetattr(0, TCSANOW, &old);
    return rc;
}

Driver,

thanks very much for help. I have find the solution. Your code works.