What's wrong with the example in the Expect POD? 
$exp->expect($timeout,
              [ qr/username: /i, sub { my $self = shift;
                                       $self->send("$username\r");
                                       exp_continue; }],
              [ qr/password: /i, sub { my $self = shift;
                                       $self->send("$password\r");
                                       exp_continue; }],
              $shell_prompt);

[download]
All you need to add before it is something like: 
print "username: ";
my $username = <STDIN>;
print "password: ";
my $password = <STDIN>;
chomp $username;
chomp $password;

[download]
I've never used Expect, but the POD seems pretty clear.

rdfield

In reply to Re: User interaction mid script again by rdfield
in thread User interaction mid script again by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.