The basic format for declaring variables is,

	var name : type;

where name is the name of the variable being declared, and type is one of the recognised data types for pascal.

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Before any variables are used, they are declared (made known to the program). This occurs after the program heading, and before the keyword begin, eg,

	program VARIABLESINTRO (output);

	   var  number1: integer;

	        number2: integer;

	        number3: integer;

	begin

	        number1 := 34;  { this makes number1 equal to 34 }

	        number2 := 43;

SELF TEST
Are the following valid variable declarations? 


	 var day, month : integer;

	     time       : real;

	 var time : real;

	     day  : integer;

	     month: integer;
Classify each of the following according to the four basic data types. 
	34.276   ____________         -37   __________________

	H        ____________         <     __________________
	dd       ____________         5.09E+27 _______________
	0        ____________         0.0   __________________
 
 
Answers
 
Are the following valid variable declarations? 


	 var day, month : integer;

	     time       : real;

	 var time : real;

	     day  : integer;

	     month: integer;
They are both identical and also valid!

Classify each of the following according to the four basic data types. 
	34.276  Real         -37       Integer

	H       Character    <      Character

	dd      Character    5.09E+27  Real

	0       Integer      0.0       Real