## Section1.15Expressions-WE5-P1

### Subsection1.15.1Subgoals for evaluating an assignment statement

1. Determine resultant data type of expression

2. Update variable for pre-increment or pre-decrement operators (side effect)

3. Evaluate arithmetic expression according to operator precedence

4. If an assignment statement (=), is Left Hand Side (LHS) a variable? Check data type of value against data type of variable.

5. Update variable for post-increment or post-decrement operators (side effect)

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).

### Subsection1.15.2Expressions-WE5-P1

Given

int alpha = 2, beta = 1, delta = 3, eta, gamma;
double omega = 2.5, theta = -1.3, kappa = 3.0, lambda, rho;


#### ExercisesExercises

##### 1.

Q30: delta += alpha;

• valid

• invalid

##### 2.

Q31: alpha *= beta + delta ;

• valid

• invalid

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