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Subgoals

Section 2.21 Expressions-WE7-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. Is the Left Hand Side (LHS) of the assignment statement a variable? Check the data type of the value on right hand side (RHS) against data type of LHS variable.
  5. Update variable for post operators based on side effect

Subsection 2.21.1

Given
int alpha = 2;
int beta = 1;
int delta = 3;
int eta;
int gamma;

double omega = 2.5;
double theta = -1.3;
double kappa = 3.0;
double lambda;
double rho;

Exercises Exercises

1.
Q46: gamma = delta + ++beta / alpha--;
What is the value of alpha after execution? The next three questions are about this line being executed once.
2.
Q47: gamma = delta + ++beta / alpha--;
What is the value of beta after execution?
3.
Q48: gamma = delta + ++beta / alpha--;
What is the value of gamma after execution?
4.
Q49: eta = alpha + ++beta / delta--;
What is the value of beta after execution? This is a new expression to be evaluated, and exists separately from previous questions.
5.
Q50: eta = alpha + ++beta / delta--;
What is the value of delta after execution? This is a new expression to be evaluated, and exists separately from previous questions.
6.
Q51: eta = alpha + ++beta / delta--;
What is the value of gamma after execution? This is a new expression to be evaluated, and exists separately from previous questions.
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