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Question by Dollar-Fish · Dec 31, 2015 at 04:04 PM · c#if-statementsintif statement

If an integer ends with an 1.

I want to use an if statement to check whether a number ends with a one or not. These ints are whole numbers too. Can I check whether an int ends with an 1 or not? I don't want to round the number. Thank you in advance.

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Answer by Dave-Carlile · Dec 31, 2015 at 04:29 PM

If you divide an integer by 10 the result will be the number of "10s" that exist within your value, but there may be some left over - the remainder. The remainder can be between 0 and 9. It will be 0 if the integer is evenly divisible by 10. As it turns out it will be 1 if the integer ends in a 1.

The modulus operator gives you the remainder after dividing one value by another, so you can use that operator to easily check if the remainder is 1...

 if (value % 10 == 1)
 {
     Debug.Log(value);
 }


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avatar image Dollar-Fish · Dec 31, 2015 at 06:41 PM 0
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How can I check if it ends with a 2?

avatar image Dave-Carlile Dollar-Fish · Dec 31, 2015 at 06:51 PM 0
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All of the information you need to answer that is already there. What happens when you divide 2 by 10? You get 0 with a remainder of what? How about 22? 23? Do the math, then apply that to what I answered above.

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