DelphiBasics
 AndKeyword Boolean and or bitwise and of two arguments
 1 Boolean expression and Boolean expression 2 Integer expression and Integer expression
Description
The And keyword is used in two different ways:

1. To perform a logical or boolean 'and' of two logical values. If both are true, then the result is true, otherwise, the result is false.

2. To perform a mathematical 'and' of two integers. The result is a bitwise 'and' of the two numbers. For example:

10110001 And 01100110 = 00100000
Notes
If the boolean expression is calculated (as opposed to being a Boolean variable), then brackets are required to isolate it.
Related commands
 Not Boolean Not or bitwise not of one arguments Or Boolean or or bitwise or of two arguments Xor Boolean Xor or bitwise Xor of two arguments

 Example code : Illustrate both types of and usage // Full Unit code.// -----------------------------------------------------------// You must store this code in a unit called Unit1 with a form// called Form1 that has an OnCreate event called FormCreate. unit Unit1; interface uses  Forms, Dialogs; type  TForm1 = class(TForm)    procedure FormCreate(Sender: TObject);  end; var  Form1: TForm1; implementation{\$R *.dfm} // Include form definitions procedure TForm1.FormCreate(Sender: TObject); var   num1, num2, num3 : Integer;   letter           : Char; begin  num1   := \$25;    // Binary value : 0010 0101  num2   := \$32;    // Binary value : 0011 0010                    // And'ed value : 0010 0000 = \$20 = 32 dec   letter := 'G';   // And used to return a Boolean value   if (num1 > 0) And (letter = 'G')   then ShowMessage('Both values are true')   else ShowMessage('None or only one true value');   // And used to perform a mathematical AND operation   num3 := num1 And num2;   ShowMessageFmt('\$25 And \$32 = \$%x',[num3]); end; end. Hide full unit code Both values are true   \$25 And \$32 = \$20