Exercise E1

1. Give an example of binding at each of the following binding times:

1. language design time; b) language implementation time; c) compile time; d) linkage time

e) load time; f) execution time.

B. What is the difference between static type binding and dynamic type binding?

C. in C++, what is the difference between the following two statements:

a) int num; and b) extern int num;

D. in a language that supports type inference, do you need to specify the data type of the variable l or w in the definition of each of the following functions? Explain your answer.

fun computePeri( l, w ) = 2 * (l + w); fun computeArea( l, w ) = l * w;

E. Write the simple assignment that corresponds to each of the following compound assignment:

num * = 5; result * = num + 2;

F. Assume that variables i, j, n and m are declared as follows: int i = 6 , j = 10 , n , m;

Show the value of each variable after the execution of the following instructions:

(NB: the questions are independent).

n = --i * j++; n= ______________ i=______________ j = ____________

m = i- - * ++ j; m= ______________ i=_______________ j = _____________

Exercise E2

Do the following exercises from the book: 9 page 343 & 344; 13 page 344 and 20 page 345.

Exercise E3

Assuming that the variables are defined and initialized as follows:

int num1 = 9 , num2 = 5 , num3 = 10;

float fnum = 12.50;

char ch = P;

A. Evaluate the following conditions (using short circuit evaluation whenever possible):

a) 2 * num1 - 5 >= 9 || fnum / 2 + 10 <= 6.5

b) num1 + 5 = = 24 || num1 1 > num2 - 5

c) num1 + num2 == num3 + 5 && 2 * num3 <= 4 * num2

d) 2 * num1 - 5 >= 9 && fnum / 2 + 10 <= 6.5

e) num1 - num2 <= num1 / 3 || num1 * num2 > 100

f) ! (num1 + 5 <= 13)

g) num1 - 5 >= num3 || num2 < 15 && num1 >= 9

B. Which of the following C++ conditions are equivalent (that means have the same true value)?

a) num1 != 0 d) !num1

b) num1 == 0 e) !(num1 == 0) c) num1

Exercise E4

Show the values of the variables $result1 and $result2 after the execution of the following statements:

($num1, $num2, $result1, $result2) = (24, 4, 0, 0);

$num1 > $num2 ? $result1 : $resul2 = $num1 / $num2;

($num1, $num2) = ($num2, $num1);

Exercise E5

Show the output of the following C++ program segment:

1. For the input values: 25 and 3.
2. For the input value 4 and 12.

int num1, num2;

cin >> num1 >> num2;

cout << 2 + (num1 > num2 ? num1/ num2 : num2 / num1);