**Question #1**:
In an expression, a(n) ____________ is an *object* (i.e., data), and
a ____________ is an *operation* (i.e., action).

**Question #2**:
Output is done with the ____________ object using the ____________ operator.
Input is done with the ____________ object using the ____________ operator.

**Question #3**:
List the five arithmetic operators.

**Question #4**:
List the six relational operators.

**Question #5**:
List the three logical operators.

**Code #1**:
Write an arithmetic expression to multiply `unitCost`

and
`unitCount`

.

**Code #2**:
Write an relational expression to test if `unitCount1`

is less
than `unitCount2`

.

**Code #3**:
Write a logical expression to test if `foo()`

and `bar()`

are both `true`

.

**Code #4**:
Write a function expression that computes the cosine of 3.14159.

**Code #5**:
Write an assignment expression that sets `unitCost`

to 19.99.
(Note: this is *not* a declaration.)

Lab Exercise

Report errors to Larry Nyhoff (nyhl@cs.calvin.edu)