How do I round a float upwards to the nearest int in C

Question

In C   how do I round a float upwards to the nearest int  I see Math Ceiling and Math Round  but these returns a decimal   Do I use one of these then cast to an Int

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You can cast to an int provided you are sure it s in the range for an int  Int32 MinValue to Int32 MaxValue

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The easiest is to just add 0 5f to it and then cast this to an int

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Off the top of my head   float fl   0 678  int rounded f    int  fl 0 5f

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Do I use one of these then cast to an Int    Yes  There is no problem doing that  Decimals and doubles can represent integers exactly  so there will be no representation error   You won t get a case  for instance  where Round returns 4 999    instead of 5

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int Math Round myNumber  0

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If you want to round to the nearest int   int rounded    int Math Round precise  0     You can also use   int rounded   Convert ToInt32 precise     Which will use Math Round x  0   to round and cast for you  It looks neater but is slightly less clear IMO     If you want to round up   int roundedUp    int Math Ceiling precise

[c#] How do I round a float upwards to the nearest int in C#?

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