An operator in a programming language is a symbol that tells the compiler or interpreter to perform specific mathematical, relational or logical operation and produce final result.
| Operators | Meanings | Operators | Meanings |
|---|---|---|---|
| + | Addition | >= | Greater than or equal to |
| – | Subtraction | <> | Not equal to |
| * | Multiplication | = | equal to |
| / | Division | & | String Concatenation |
| \ | Integer Division | And | Logical And |
| Mod | Modulo Division | Not | Logical Not |
| < | Less than | Or | Logical Or |
| > | Greater than | Xor | Logical Xor |
| <= | Less than or equal to | ^ | Power |
Assigning values to variables : ‘=’ operator
The Assignment operator (=) is used to assign a value or an expression to a variable. When you assign a value, its not the same as the Equal to operation, but the value is copied to a variable. Besides assigning values and expressions, you can assign a variable to a variable also.
Example
x=a+b
‘=’ , ‘+’ are the operators.
x,a,b are the operands and ‘a+b’ is an expression. x=a+b is a statement.
The following program will print 20.
Private Sub cmdDisplay_Click()
Dim num As Integer, r As Integer, n As Integer
n = 10
r = n ^ 2 'n to the power 2
num = n + r / n
Print num
End Sub
Output : 20
The Integer Division Operator (‘\’)
The Integer Division operator(‘\’) eliminates the decimal part after division.
Example
Private Sub cmdDivision_Click()
Dim a As Double, b As Double, c As Double
a = 12: b = 5
c = a \ b
Print c
End Sub
Output : 2
The ‘Mod’ operator
The Mod operator is used to calculate remainder.
Example :
Private Sub cmdShow_Click()
Dim remainder As Integer, num As Integer
num = 21
remainder = num Mod 10
Print remainder
End Sub
Output : 1
Boolean Operators : And, Or, Not, Xor
To learn about Boolean operators, you first need to have the concept of If-Else condition. So Boolean operators are explained in a later lesson