G'day perlbeginneraaa,

Welcome to the Monastery.

"I expect the code returns the paragraphs, however, I got the whole text back."

You need to show us exactly what output you got. I ran your code without any problems. Here's the (cut-down) output I got: 

New Paragraph:      Assembly and Manufacturing


****************************************
New Paragraph:      The Company's assembly and manufacturing operation
+s include PCB assembly
and the manufacture of subsystems and complete products. Its PCB assem
+bly
...
Company has invested in FICO, a producer of injection molded plastic f
+or Asia
electronics companies with facilities in Shenzhen, China.


****************************************
New Paragraph:      As OEMs seek to provide greater functionality in s
+maller products, they
increasingly require advanced manufacturing technologies and processes
+. Most of
...
performance. The Company also provides traditional PTH electronics ass
+embly
using PCBs and leaded components for lower cost products.;

****************************************

[download]
"I am quite confused with these errors."

You don't show any errors. I added this to the start of your code: 

use strict;
use warnings;
use autodie;

[download]

No errors or warnings were emitted.

— Ken

In reply to Re: Extract Paragraph From Text by kcott
in thread Extract Paragraph From Text by perlbeginneraaa

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.