Increment and decrement operationsIncrement and decrement operations
|These two operators work only on numeric operands.
The syntax is:
++ increments <target> by one, -- decrements <target> by one.
These are equivalent to += 1 and -= 1.
<target> must be an existing variable and contain an integer value.
If <target> contains a real value then the real is truncated to the nearest integer and then incremented or decremented.