Question 22 (1 point) What is the result of the following expression: floor(765.

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Question 22 (1 point)

What is the result of the following expression:

floor(765.4321 * 10 + .5) / 10

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Question 23 (1 point)

What is the result of the following expression?

fabs(7.5)

Question 23 options:

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Question 24 (1 point)

What is the result of the following expression?

fabs(-7.5)

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Question 25 (1 point)

What is the result of the following expression?

floor(7.5)

Question 25 options:

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Question 26 (1 point)

What is the result of the following expression?

floor(-7.5)

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Question 27 (1 point)

What is the result of the following expression?

ceil(7.5)

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Question 28 (1 point)

What is the result of the following expression?

ceil(-7.5)

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Question 29 (1 point)

What is the result of the following expression?

n = rand() % p

Question 29 options:

0 <= n <= p

0 <= n < p

0 < n <= p

0 < n < p

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Question 30 (1 point)

The function _________________ is used to set the random number seed to randomize the program. (Put just the function name, no parenthesis or spaces)

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Question 31 (1 point)

int x = 0;

while (x < 10) {

cout << x;

x++;

}

What is the first thing printed by the above code?

Question 31 options:

-1

0

1

2

Nothing is printed

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Question 32 (1 point)

int x = 0;

while (x < 10) {

cout << x;

++x;

}

What is the first thing printed by the above code?

Question 32 options:

-1

0

1

2

Nothing is printed

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Explanation / Answer

Floor function: Floor(x) determines largest integer less than or equal to x.

Ceil(x): Ceil(x) is smallest integer greater than or equal to x.

Fabs(x): Fabs(x) gives absolute value of x.

Answer 22. floor(765.4321 * 10 + .5) / 10

= floor( 76.54321 + 0.5)/10

= floor(77.04321)/10

= 77/10 = 7.7

Answer 23. fabs(7.5)

= 7.5

Answer 24. fabs(-7.5)

= 7.5

Answer 27. floor(-7.5)

= -8

Answer 28. ceil(-7.5)

= -8

Answer 29. n= rand()%p

rand() function is used to give random values.

The result of expression will be random value modulus the value of p.

It will be 0<=n<=p. Since, modulus can be 0 and equal to p.

Answer 30. The function rand is used to set the random number seed to randomize the program.

Answer 31.

int x = 0;

while (x < 10) {

cout << x;

x++;

}

First thing printed by above code is 0. Since, while condition is true and print statement is immediately below while statement.

Answer 32.

int x = 0;

while (x < 10) {

cout << x;

++x;

}

First thing printed by above code is 0. Since, while condition is true and print statement is immediately below while statement.

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