To create a table in LaTeX, requires the use of an environment such as tabular. While there are better environments to create tables, tabular is considered the basic table environment. This article will focus on the tabular environment with an explanation for how it works and some examples to start using it.
It is often said that a good programmer can learn any language and has a couple of dozen of languages under his belt. It is probably true for most good programmers, but what truly marks a good programmer? I would say that a good programmer, or even a great programmer knows three languages and he knows them well.
Ever since Brian Kernighan wrote the book "The C Programming Language", the basic program to test a new language has been "Hello, World!". "Hello, World!" is a program that prints "Hello, World!" on the screen. So to start of this Perl tutorial, we will learn how to write a "Hello, World!" program in Perl.
Most programs contain information that is repeated multiple times. It could be a name, such as Jack, or a number such as 3. It is not unusual to have to change that information across the entire program. In such a situation, variables comes in handy. Variables are just like boxes that contain information. To find out what is stored in the box, you just look inside.
Interaction between the program and the user, or with another program is an importang concept in programming. Whether the interaction is through user input or a config file isn't really important. To be useful for anything but learning, a program would need interaction. Sometimes the user interacts with the program only at startup, other times the user interacts with the program all the way until it exits the program. This article will focus on input at the start of the program.
Factorials can be used to calculate all kinds of useful things. A great example is, how many ways can you order a que. The simple answer is n!, or the factorial of n. So if you have a group of four persons, the number of possible ways to order them from first to last is 4! or 24.