Delphi Basics: Delphi data types Delphi data types Documents Tutorials Delphi data types References Articles Author links Buy Website Traffic at Buy Proxies at Delphi data types Storing data in computer programs For those new to computer programming, data and code go hand in hand. You cannot write a program of any real value without lines of code, or without data.

1. Delphi Array Constants

A Word Processor program has logic that takes what the user types and stores it in data. It also uses data to control how it stores and formats what the user types and clicks. Data is stored in the memory of the computer when the program runs (it can also be stored in a file, but that is another matter beyond the scope of this tutorial).

Delphi passes the length as a hidden parameter to the subroutine. An open array may also be defined with const value type. This is called a Variant open array. Delphi supports arrays of any numbers of dimensions. In reality, a multidimensional array is a collection of arrays - each element of the first array is another array. Each element of that array is in turn another array and so on.

Simatic s7 download. Each memory 'slot' is identified by a name that the programmer chooses. For example LineTotal might be used to name a memory slot that holds the total number of lines in a Word Processor document. The program can freely read from and write to this memory slot. This kind of data is called a Variable.

It can contain data such as a number or text. Sometimes, we may have data that we do not want to change. For example, the maximum number of lines that the Word Processor can handle.

When we give a name to such data, we also give it its permanent value. These are called constants. Simple Delphi data types Like many modern languages, Delphi provides a rich variety of ways of storing data.

We'll cover the basic, simple types here. Before we do, we'll show how to define a variable to Delphi: var // This starts a section of variables LineTotal: Integer; // This defines an Integer variable called LineTotal First,Second: String; // This defines two variables to hold strings of text We'll show later exactly where this var section fits into your program. Notice that the variable definitions are indented - this makes the code easier to read - indicating that they are part of the var block. Each variable starts with the name you choose, followed by a: and then the variable type. As with all Delphi statements, a; terminates the line.

As you can see, you can define multiple variables in one line if they are of the same type. It is very important that the name you choose for each variable is unique, otherwise Delphi will not know how to which you are referring to. It must also be different from the Delphi language keywords. Don't worry, you don't need to come up with an unusually creative name (such as and others in the industry) for each of your variables. Unique in this case simply means the only occurrence.

You'll know when you have got it right when Delphi compiles your code OK (by hitting Ctrl-F9 to compile). Delphi is not sensitive about the case (lower or upper) of your names. It treats theCAT name the same as TheCat.

Number types Delphi provides many different data types for storing numbers. Your choice depends on the data you want to handle. Our Word Processor line count is an unsigned Integer, so we might choose Word which can hold values up to 65,535.

Download new Popular Kannada mp3 songs to your Hungama account. Listen to your favorite Popular Kannada songs for free online. Check out latest Popular. New Kannada Songs Download- Listen 2019 New Kannada songs free online or Download Latest Kannada Songs MP3. Play latest Kannada Music by top. 2018 Latest Movie Mp3 Songs,Kannada 2018 Latest Mp3 Songs Free Download,2018 Latest Kannada Songs,2018 Latest Movie Mp3 Songs Free Download. Kannada Songs- Download Kannada movie songs or Play Kannada movies MP3 songs, Kannada music albums songs free online. Listen to latest or old. Kannada mp3 songs free download.

Delphi Array Constants

Financial or mathematical calculations may require numbers with decimal places - floating point numbers.