Assume this: 

int a = 4;

int b = 13;

double x = -9.1;

Evaluate each of the following expressions. Follow these guidelines:

• Put each evaluation step on a separate line and use the ⇒ symbol between steps.

• Evaluate each expression independently of the other expressions; in other words, use the above assumed values for each expression evaluation.

• Expression evaluation problems can be tricky. We encourage you to check your work by running test code on a computer.

• If there would be a compilation error, specify “compilation error.”

a) a + b--

b) a = x = -12

c) 8 + a * ++b / 20

d) a + 7 / (x + 12.1)

e) a + (b = 5) %9.