Operators
v Most programming languages have more operators
than a pocket calculator
o Operators like + taking 2 operands are called binary:  a + b
o Operators like -  taking 1 operand are called unary:  - a
v A very useful operator is concatenate, & in VB6,
which connects two strings together:
o plural = “dog” & “s”
v The relational operators are:
; a < b     less than             a > b   greater than
; a <= b less than or equal to a >= b greater than or equal
; a = b   equal to             a <> b not equal