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

You can create your own getch() function on Linux in this manner.

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

Demo code:

int main(int argc, char **argv) {
    int ch;
    printf("Press x to exit.\n\n");
    for (;;) {
        ch = getch();
        printf("ch = %c (%d)\n", ch, ch);
        if(ch == 'x')
              break;
    }
    return 0;
}