要求用户输入密码,而不在控制台上显示输入字符?

时间:2011-02-13 05:45:58

标签: c

  

可能重复:
  Enter Password in C

要求用户输入密码而不在控制台上显示输入字符?

2 个答案:

答案 0 :(得分:2)

您需要将控制台设置为“无回显”模式。这取决于您的特定操作系统。以下是为linux执行此操作的示例:http://www.cplusplus.com/forum/beginner/1988/page4.html#msg14522

答案 1 :(得分:0)

请参阅GNU libc documenation for getpass,它提供了一个如何实现此功能的简单示例:

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

 ssize_t
 my_getpass (char **lineptr, size_t *n, FILE *stream)
 {
   struct termios old, new;
   int nread;

   /* Turn echoing off and fail if we can't. */
   if (tcgetattr (fileno (stream), &old) != 0)
     return -1;
   new = old;
   new.c_lflag &= ~ECHO;
   if (tcsetattr (fileno (stream), TCSAFLUSH, &new) != 0)
     return -1;

   /* Read the password. */
   nread = getline (lineptr, n, stream);

   /* Restore terminal. */
   (void) tcsetattr (fileno (stream), TCSAFLUSH, &old);

   return nread;
 }