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How to create point object containing x,y and creating its array? so that i can loop over those points, add/remove points dynamically.
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The process begins by making a copy of the pointer that points to the array: int *ptr = A; // ptr now also points to the start of the array. This pointer points to the first element in the array. You can dereference that pointer to access the array element.
An array of objects, all of whose elements are of the same class, can be declared just as an array of any built-in type. Each element of the array is an object of that class. Being able to declare arrays of objects in this way underscores the fact that a class is similar to a type.
JavaScript Array push() The push() method adds new items to the end of an array. The push() method changes the length of the array.
var points = [{x:45, y:64}, {x:56, y:98}, {x:23, y:44}];
var len = points.length;
for(var i = 0; i < len; i++) {
alert(points[i].x + ' ' + points[i].y);
}
// to add more points, push an object to the array:
points.push({x:56, y:87});
Demo: http://jsfiddle.net/gjHeV/
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