Section1.2Expressions-WE1-P1

Subsection1.2.1Subgoals 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).

Subsection1.2.2Expressions-WE1-P1

Given

int alpha, beta = 1, gamma;
double omega = 2.5, theta, lambda;


ExercisesExercises

1.

Q1: alpha = beta;

• valid

• invalid

2.

Q2: alpha = omega;

• valid

• invalid

3.

Q3: theta = 22;

• valid

• invalid

4.

Q4: omega = gamma;

• valid

• invalid

5.

Q5: theta = lambda;

• valid

• invalid