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Section 1.3 Expressions-WE1-P2

Subgoals for evaluating an assignment statement.

  1. Determine resultant data type of expression
  2. Update variable for pre operators based on side effect
  3. Solve arithmetic equation, operator precedence
  4. If = statement, is Left Hand Side (LHS) a variable? Check data type of copied value against data type of variable
  5. Update variable for post operators based on side effect

Subsection 1.3.1

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

Exercises Exercises

1.
Q6: alpha = beta;
What is the value of alpha?
2.
    Q7: alpha = omega;
    Why is this statement invalid?
  • 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;
What is the value of theta?
4.
Q9: omega = beta;
What is the value of omega?
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
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