C语言密码输入回显星号

Write a C program to display * for each letter of password you type in command line.

Like:Password
********

#include <curses.h>
int main()
{
    initscr(); 
    char c;
    noecho(); 
    while((c = getch()) != '\n') {
        printw("*");
    }
    endwin(); 
    return 0;
}

#include <stdio.h>
#include <unistd.h>
int main()
{
    char *passwd = getpass("password:"); 
    printf("%s\n", passwd);
    return 0;
}