Question about rand() function

Hi again,

I read in the C++ book that rand() function returns a random number and that in order to get a random number in a range that you want, the formula is:

1-6,

Code:

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1 + rand() % 6

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And that rand() % 6 would return 0-6, and then the +1 would make that 1-7 though?

Also, if I run

Code:

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rand() % 13

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it never returns 13, only 0-12, but can't you get 13 if you divide the right number as the remainder?

Thanks again.

Quote:

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Originally posted by learning C++
Hi again,
Hi

I read in the C++ book that rand() function returns a random number and that in order to get a random number in a range that you want, the formula is:

1-6,

Code:

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1 + (rand() % 6) // add parens for clarity

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And that rand() % 6 would return 0-6,
and then the +1 would make that 1-7 though?
No, it returns 0-5, then the +1 gives 1-6

Also, if I run

Code:

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rand() % 13

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it never returns 13, only 0-12, but can't you get 13 if you divide the right number as the remainder?
Don't know what you are asking here.
The right number to get 0-13 is 14

Thanks again.
Welcome

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