输入密码的写法

#include <stdio.h>
#include <conio.h>
#include"getpasswd.h"

char passwd[12] = "";

char *getpasswd()
{
    char c;
    int i = 0;
    
    while ((c=getch()) != '\r')
    {
        if(c==8)
            i--;
         else
         {
             passwd[i++] = c;
             putchar('*');
         }
    }
     passwd[i] = '\0';
    
    return passwd;
}