int freqs[256]={0};

I think that syntax is part of C99, inherited back as a "good idea" from C++. If the initializer list in curly brackets is shorter than the number of elements in the entity being initialized, all elements not enumerated in the list will initialize to zero. Ex: int freqs[256]={1}; would initialize as freqs[0] = 1, freqs[1] = 0, freqs[2] = 0, etc.

gcc offers some additional features beyond that, but the syntax used here should be portable to any C99 implementation.


Dave

In reply to Re^3: The sum of absolute differences in the counts of chars in two strings. by davido
in thread The sum of absolute differences in the counts of chars in two strings. by BrowserUk

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.