Class 2 Quiz

CS C++
Quiz 2

The expression !((x > y) && (y <= 3)) is equivalent to which of the following?

By the rules of short-circuit evaluation, in the following expression,

p || (n < 3)

(a)	if `p` is true, then `n < 3` will not be evaluated
(b)	if `p` is false, then `n < 3` will not be evaluated
(c)	if `p` is true, then `n < 3` will be evaluated
(d)	none of the above

What numbers are printed out when the following for loop is executed?

    for (i = 0; i < 12; i++)
        cout << i + 1 << endl;

(a)	the numbers 0 through 12 (including 0 and 12)
(b)	the numbers 1 through 12 (including 1 and 12)
(c)	the numbers 0 through 11 (including 0 and 11)
(d)	the numbers 1 through 11 (including 1 and 11)

Assume that the following definitions have been made.

    int num = 10;
    int sum;

Which of the following code segments correctly computes the sum of the first 10 multiples of 5 (i.e., 5, 10, ..., 50)?

(a)

sum = 5;
while (num > 1)
{
    sum += sum;
    num--;
}

(d)

sum = 0;
while (num >= 0)
{
    num--;
    sum += 5 * num;
}

(b)

sum = 5;
while (num > 0)
{
    sum += sum;
    num--;
}

(e)

sum = 0;
while (num > 0)
{
    sum += 5 * num;
    num--;
}

(c)

sum = 0;
while (num > 0)
{
    num--;
    sum += 5 * num;
}

Write a program that inputs a list of integers, terminated by entering 0, then displays the number of even numbers included in the list.
Write a for loop to print out the squares of the first 8 odd numbers (that is, 1, 9, 25, 49, 81, 121, 169, 225). Your solution should use only one variable.