Array Data Type

Array is a structured data type that can hold some data which has same data type. Every element in an array has an index and it can be individually accessed. In Pascal, we can have one-dimensional array or n-dimensional array.

To declare one-dimensional array that can hold six character, we can us this statement :

Type

    OneDimensionalArray = array[1..6] of char;

Var

    TheData : OneDimensionalArray;

Or you can use this statement :

 

Var

    TheData : array[1..6] of char;

The statement above declares an array that can hold six elements. It is called static array, because it has a fix amount of data. While a dynamic array does not have a fix amount of data.

To access an element in an array use this syntax :

ArrayVariableName[ArrayIndex];

Example :

TheData[3] := ‘A’;

Writeln(TheData[3]);

Readln(TheData[3]);

Example program :

program Project1;
{$APPTYPE CONSOLE}
uses
   SysUtils;
var
   i : integer;
   TheData : array[1..5] of char;
begin
   //assigning values to array
   TheData[1] := 'A';
   TheData[2] := 'B';
   TheData[3] := 'C';
   TheData[4] := 'D';
   TheData[5] := 'E';
   for i := 1 to 5 do writeln(TheData[i]);
   readln;
end.

You can download the complete code here.