- arithmetic operator

The - arithmetic operator designates a subtraction operation, or to indicate a negative numeric value.


num.exp - num.exp


Subtracts 1 from the contents of variable x.

x = x - 1

Negates the contents of z and adds to the contents of x. The result is placed in x.

x = x + (-z)

Subtracts the contents of the variable discount.amount from the variable price. Places the result in the variable amount.

amount = price - discount.amount

Subtracts the contents of variable discount.amount from the product of unit.cost and qty. The () are used to group precedence are unnecessary due to default precedence. They are added for program clarity.

amount = (unit.cost * qty) - discount.amount

This assigns the value, -1, to the variable counter.

counter = -1