Name three types of parameters. List characteristics of each type.

What will be an ideal response?

Parameter Type Use
IN Passes a value into the program.
 Read-only type of value. Itcannot
be changed.  Default parameter type. For
example, constants,literal, and expressions
can be used as IN parameters.
OUT Passes a value back from the program. Write-
only type of value. Cannot assign default
value.  If a program is successful, value is
assigned. For example, a variable canbe used
as OUT parameter.

IN OUT Passes value in and returns value back. Value is
read from and then written to.  For example, a
variable can be used as a IN OUT parameter.