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Remainder

pexpex Posts: 16Member
what is it?
i know it's number1 % number2, but i have no idea how to use it and why..
--Amir.

Comments

  • JonathanJonathan Posts: 2,914Member
    : what is it?
    : i know it's number1 % number2, but i have no idea how to use it and
    : why..
    :
    % is the modulo operator. For example:-

    print 12 % 5; # prints 2
    print 10 % 2; # prints 0

    Essentially, it prints the remainder when you're doing division. Mathematically we say that "12 is congruent to 2 modulo 5", or:-

    12 = 2 (mod 5)

    Apart from the = sign is a congruency sign, e.g. 3 lines intead of 2.

    Modulo is useful for various things, like wrap-round buffers.

    Jonathan

    ###
    for(74,117,115,116){$::a.=chr};(($_.='qwertyui')&&
    (tr/yuiqwert/her anot/))for($::b);for($::c){$_.=$^X;
    /(p.{2}l)/;$_=$1}$::b=~/(..)$/;print("$::a$::b $::c hack$1.");

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