i used to name a program by clicking new and then by naming a program i click "save as" in both C,C++ and then i open a that named file for writing a program into it and at last i click save and whenever i need to run that program i open that program, but how i can start with perl?

Now, breath slowly. What were you clicking on? Visual Studio I guess. You can use Visual Studio for perl, but it is an over-complication, you just need an ordinary text editor to create your program files, even Notepad would do if you are desperate. There is no compile/link phase that you have to invoke manually. Save the file with a '.pl' extension, then run it from the command-line. Now try your examples with open.

A Perl file handle is (simply put) an abstraction of the FILE struct used by stdio, but it will not help you to think too much in C terms. Try to think in Perl terms instead, and read the tutorials.

In reply to Re: how to create a perl program using filehandle and streams ? by cdarke
in thread how to create a perl program using filehandle and streams ? by Monk_perl

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.