Which of the following C+ + statements displays a random number in the range 1 through 10?

a)

cout << 1 + rand () % 10;

b)

cout << 1 + rand () % (10 - 1 + 1);

c)

cout << 1 + rand () % 10 - 1 + 1;

d)

first and second answers are correct

e)

all of the above

Question

Computers & Technology

Nevin

24 July, 20:43

Which of the following C+ + statements displays a random number in the range 1 through 10?

a)

cout << 1 + rand () % 10;

b)

cout << 1 + rand () % (10 - 1 + 1);

c)

cout << 1 + rand () % 10 - 1 + 1;

d)

first and second answers are correct

e)

all of the above

+2

Answers (1)

Know the Answer?

Ashleigh Villegas · Answer 1

Option (e)

Explanation:

rand () function results into a random number between 0 to a maximum number RAND_MAX which is a constant. To range it from 1, 1 is added and to decide its maximum value it should be modulo with that number. For example - if a number generated is 56 the 56%10 will be 6 which is in the range of 1 to 10. Option (a) is same as Option (b) because 1 is added and then subtracted which is neutral. Similarly, option (c) is also same.

Which of the following C+ + statements displays a random number in the range 1 through 10?a)cout << 1 + rand () % 10;b)cout << 1 + rand () % (10 - 1 + 1);c)cout << 1 + rand () % 10 - 1 + 1;d)first and second answers are correcte)all of the above

Which of the following C+ + statements displays a random number in the range 1 through 10?

a)

cout << 1 + rand () % 10;

b)

cout << 1 + rand () % (10 - 1 + 1);

c)

cout << 1 + rand () % 10 - 1 + 1;

d)

first and second answers are correct

e)

all of the above