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Lesson 5ASP Arithmetic Operators
ObjectiveCreate formulas and test constants and variables.

Mathematical Operators

Sooner or later, in a Web application, you will need to perform mathematical calculations. In a previous lesson, we used the multiplication (*) and subtraction (-) operations to perform a discount. Here are other mathematical operators available for use in ASP code:

+
Addition 1 + 2 = 3        
-              
Subtraction 2 - 1 = 1 
*              
Multiplication 6 * 3 = 18
/              
Division 6 / 3 = 2
\
Integer Division 6.3 \ 3.1 = 2
Mod
Modulus 8 Mod 3 = 2 (Any remainder is discarded)
^
Exponentiation 8 ^ 2 = 64

(NOTE: This type of division rounds the two numbers to integer values then produces an integer result. Any remaining decimal values are discarded.)

Logical -Boolean-operators

There are also a number of logical operators available for our use.
Two of the most commonly used are
  1. NOT and
  2. AND.
The next lesson presents some common programming structures used in ASP scripts.


If Not  (A = 5) Then . . .
  'If A is NOT equal to 5,
  'then something happens
  'Can also be written as A <> 5
	.
	.
If (A <> 5) AND (A <> 7) Then . . .
  'If A is not equal to 5 AND 
  'A is not equal to 7 
  'then something happens
            .

ASP Operators Quiz

Click the Quiz link below to check your understanding of the topics discussed in the last few lessons.
ASP Operators Quiz