Skip to main content

Section 1.3 Expressions-WE1-P2

Subsection 1.3.1 Subgoals 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 the assignment statements below, either give the new value of the assigned variable, or enter “invalid” if the statement would result in a compiler error or using an undefined value. Each problem is independent of the others (e.g. Question 2 does not depend on Question 1, only the “Given” code).

Subsection 1.3.2 Expressions-WE1-P2

Given

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

Exercises Exercises

1.

Q6: alpha = beta;

2.

    Q7: alpha = omega;

  • cannot assign a double to an int variable

  • lambda does not have a value

  • omega does not have a value

  • cannot assign an int to a double variable

3.

Q8: theta = 22;

4.

Q9: omega = beta;

5.

    Q10: theta = lambda;

    Why is this statement invalid?

  • cannot assign a double to an int variable

  • lambda does not have a value

  • theta does not have a value

  • cannot assign an int to a double variable

You have attempted of activities on this page.