With prime numbers, we always get a headache. We will see 2 tutorials about quick prime number testing, this one at a basic level, the next one at an advanced level. The idea of our test is the following: We create an array of bool values, to represent numbers like this: 0 - FALSE 1 - FALSE 2 - TRUE 3 - TRUE 4 - FALSE 5 - TRUE 6 - FALSE 7 - TRUE 8 - FALSE 9 - FALSE 10 - FALSE 11 - TRUE And so forth! Where we have TRUE, it is a prime number, where we have FALSE, it is not a prime number.

Introduction: This tutorial will be on allowing users to input data in to an HTML form, and then upload that data to a MySQL database through PHP. HTML: First we need our HTML form. This example will just be for a user to enter their username and email address, we will not do any validation or username checking (to assure no duplicate usernames within our website) as this is not the purpose of this tutorial.

We'll see how you can factorize a natural number, using vector and pair from the C++ STL! First, you need the following declarations:

The next project will demonstrate advantages of C++, such as: - using typedef - using the #define directive - using simple, short source code to handle apparently large tasks - easy to read code, if you develop your simple programming style The task we are going to accomplish is a simple and efficient student database. Although we have put some amounts (limitations), these can be changed very easily! Furthermore, for the simplicity of the tutorial we only used cin to read data.

Today, we will see a real and simple C++ class for complex numbers.

Introduction: This tutorial is on how to create and use methods in Java. What's a Method: A method is similar to what you may call a function in other languages. Well, actually, it's exactly the same. A function, or a method, is a script which can be called from other scripts in order to run some code, and return a value. The only difference between a function and a method, is that methods are the name given to functions in an Object Oriented Programming (OOP) language, such as Java.