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Home/ Questions/Write an expression whose value is the last (rightmost) digit of x. assume that an int variable x that has already been declared
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Jael O'Neill
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Jael O'Neill
Asked: May 18, 20222022-05-18T18:14:56+00:00 2022-05-18T18:14:56+00:00In: Math

Write an expression whose value is the last (rightmost) digit of x. assume that an int variable x that has already been declared

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I’m learning about “write an expression whose value is the last (rightmost) digit of x. Assume that an int variable x that has already been declared”, honestly I don’t know anything about it. Please give me some knowledge about it.

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    dttutoria Expert
    2022-06-21T11:12:19+00:00Added an answer on June 21, 2022 at 11:12 am

    Here are the responses to your inquiries.

    “What is the leftover after division by that number” is what you are requesting when you employ the “percent” operator. I would ask “What is the remaining of 28 divided by 10” if I had a percentage of 28 10. Of course, this would give me 8. Finding the residual of a number after dividing it by ten only gives the ones digit (right most number).
    Decimal/Base 10 is the numbering system we employ. Therefore, if you use 10, you will always receive remainders between 0 and 9.
    “Percent” is the remainder operator in Java and operates as previously mentioned.

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  2. Ethan Fournier
    2022-05-25T20:44:36+00:00Added an answer on May 25, 2022 at 8:44 pm

    x % 10 seems like the right answer. It isn’t.

    -2 % 10 is either -2 or 8 depending on language/implementation/whatever. Both are not the “last digit”.

    The correct answer is abs(x) % 10.

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