Evaluate Expressions-WE4-P1

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Section 1.11 Evaluate Expressions-WE4-P1

Subgoals for evaluating an assignment statement.

Decide order of operations
1. Decompose as necessary
Determine operator behavior based on operands
1. Operator and operands must be compatible
Solve arithmetic, expression, or operation
1. Decompose as necessary

Subsection 1.11.1

For all given problems below indicate if the code is valid or invalid. Each problem is independent of the others (e.g. Question 2 does not depend on Question 1, only the “Given” code).

Subsection 1.11.2 Expressions-WE4-P1

Given

alpha = 2
beta = 1 
delta = 3 
omega = 2.5 
theta = -1.3 
kappa = 3.0
gamma = '4'
zeta = '2.5'

Exercises Exercises

1.

Q28:

lambda = alpha / kappa + delta

valid
invalid

2.

Q29:

eta = alpha * beta + (gamma - theta) * kappa

valid
invalid

3.

Q30:

lambda = (gamma + zeta) * delta

valid
invalid

4.

Q31:

epsilon = (gamma + zeta) * omega

valid
invalid

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