n = ceil(1234 / (double)1);
cout << n << endl;
Here output is 1234 but if I write
n = ceil(99999999999999999 / (double)1);
cout << n << endl;
This time I get 100000000000000000 as output. Why this happen?
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Nicol Bolas
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Imtiaz Mehedi
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1What is the type of `n`? – cigien Aug 29 '20 at 13:41
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1`99999999999999999` can't be represented by a `double` so it gets rounded. – François Andrieux Aug 29 '20 at 13:42
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1The warning given by [clang](https://godbolt.org/z/nP5PW7) explains it perfectly. – cigien Aug 29 '20 at 13:43
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Just in passing, `(double)1` is usually written `1.0` (although some people use `1.`). – Pete Becker Aug 29 '20 at 15:09