# C++

Return Investment after X years
Great for beginners who need to learn C++, this is a basic C++ code that returns an investment after a set number of years. All you need to do is change the yearTo (the default is 4). It include loops, user interaction and some math (everyone's favourite subject).

#include <iostream> #include <iomanip> using namespace std; int main() { double amtInvest, annIntRate, finValue, yearTo; yearTo = 4; // change this to amount of years you want to check investment cout << "Enter amount to invest: "; cin >> amtInvest; cout << "Enter annual interest rate: "; cin >> annIntRate; cout << "\n********************************\n" "Investment Result\n" "********************************\n\n"; cout << "Initial Amount: " << amtInvest << "\n"; cout << "Interest Rate: " << annIntRate << "\n"; for (int year = 1; year <= yearTo; year++) { amtInvest = amtInvest + (amtInvest * annIntRate / 100); finValue = amtInvest; } cout << "Final Value: " << finValue; return 0; }

/* JavaScript

Directory Not Updating - Joomla: MosetsTree Fix
When I was working on Mosets Tree for the 1800Ambulance site, there was a bug in Moset's version 2.1.x where if you tried updating the category dynamically in the box, the categories would not update at all (would show up blank). I sent the fix to Mosets, but don't know if they're going to fix it for later versions. If not, here's the fix for that error. You can find the file in your Joomla installation folder > components > com_mtree > js > category.js. It's around line 72. Change the following line from:

jQuery('#mc_active_pathway').html(cats[0]);
to
jQuery('#mc_active_pathway').html(cats[1]);

// PHP

List Images in Directory
This can be modified to scan specific, non-image files (such as .html, .php, whatever.) In which case, you will have to change how the results echo.

function listDirImages($dir) { //$dir is the name of the directory you want to list the images. $files = scandir($dir); //scans the directory's files $preg = "/.(jpg|gif)/i"; //match the following files, can be changed to limit or extend range, ie: png,jpeg,etc. foreach($files as $img) { //loop through directory files if(substr($img, 0, 1) != '.') { //ignore anything starting with a period if(preg_match($preg, $img)) { echo "<img src='" . preg_replace($preg, "", $img) . "'><br />"; } } } } listDirImages(nameofdirectory); //call function

Random Image on Refresh (Numbers)
The image sizes are predetermined, but the order is not (hence random). Make sure your images are numbered (1 to infinity), not by name (a-z).

function randSidebar() { $file = rand(x, y);//x is the min #, y is the max $file .= '.ext';// change .ext to any extension, ie: .jpg, .gif echo '<img src="' . $file . '">'; } randSidebar(); //Call the function

Self-Writing Breadcrumb Trail v1.1
The original breadcrumb was written by Tim Bennett at DrQuincy. The original grabbed the name of the file as the trail; I modded it to pass variables through the function. Rather than have a static title and different trail, this basically combines the meta/title tag so that when you pass through the title, this shows as your last link. I combined that with an exploding array to grab one word from the title.

// Title: Self-Writing Breadcrumb Trail // Original Author: Tim Bennett // Original URL: http://www.drquincy.com/resources/code/php/selfwritingbreadcrumbtrail/ // V1.1 Author: Hybride function breadcrumbtrail($breadtitle) { $titleofpage = $breadtitle;// title of the page, set to $path = $_SERVER[ 'PHP_SELF' ]; // file path, without home index $path = explode( "/", $path );// split the path into folders $path[0] = "Home"; //since array0 is blank, set label to home/index // set the last element of the array to the title of the page $path[count($path) - 1 ] = $titleofpage; $counter = 0; // go through the array and output the trail foreach($path as $key=>$value) { // compose hyperlink for all breadcrumb trail parts except the last element if( $counter < ( count( $path ) - 1 ) ) { $href = "/"; for($c = 1; $c <= $counter; $c++) { $href .= $path[ $c ] . "/"; } // split link name into words by capital letter // regular expression provided by james pittendreigh $words = preg_split( '/([A-Z][a-z]+)/', $value, -1, PREG_SPLIT_DELIM_CAPTURE ); $linkname = "";//goes before the first letter of each link $isfirst = true; // add whitescpae to the link name foreach($words as $v) { // only consider adding whitespace if the element is populated if(!empty($v)) { // don't add whitespace to the first element if( !$isfirst ) { $linkname .= " "; } else { $isfirst = false; } $linkname .= $v; } } // output the hyperlink echo "<a href=\"$href\">$linkname</a> > "; } else { // just output the value echo $value; } $counter ++; } } // FUNCTION END // Exploding array, where $metatitle is whatever your title tags variable name is: // $m2 = explode(" ",$metatitle); // and pass through the function as // breadcrumbtrail($m2[1]); // where $m2[1] is the exploded array, and you can remove or change the "1" to whatever // of the array you want to show in the trail.