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Joe Lingle
686 PointsRounding of Constant?
Add 9:18 he divides width/chairWidth which returns an answer of 3.
Since width = 10 and chairWidth = 3 the answer makes sense i.e. 3.3333 written as an integer is 3.
But when I changed width to 11, the program still returned a value of 3 for chairs even though 3.667 should round to 4.
Does the program always round down?
1 Answer
William Li
Courses Plus Student 26,868 PointsHi, Joe Lingle
Does the program always round down?
No, it has nothing to do with rounding up or down. In Swift, and many other programming languages, when you're doing division where both the dividend and divisor are integers, the result will always be integer as well, the decimal part of the result, if any, will be completely discarded.
But when I changed width to 11, the program still returned a value of 3 for chairs even though 3.667 should round to 4.
In order to get the rounded result here, you have to do this
round(10/3.0) //=> 3
round(11/3.0) //=> 4
Make either dividend or divisor, or both, a floating point number, that way the division result will be a floating point number as well, then make to round() method to round the result to the nearest integer value.
Hope this helps.