Rounding values up or down in C#

Question

I've created a game which gives a score at the end of the game, but the problem is that this score is sometimes a number with a lot of digits after the decimal point (like 87.124563563566). How would I go about rounding up or down the value so that I could have something like 87.12?

Thanks!

Solution 1

Try using Math.Round. Its various overloads allow you to specify how many digits you want and also which way you want it to round the number.

Solution 2

Use Math.Ceiling(87.124563563566) or Math.Floor(87.124563563566) for always rounding up or rounding down. I believe this goes to the nearest whole number.

Solution 3

To always round down to 2 decimal places:

decimal score = 87.126;
Math.Floor(score * 100) / 100; // 87.12

To always round up to 2 decimal places:

decimal score = 87.124;
Math.Ceiling(score * 100) / 100; // 87.13

Solution 4

You just want to format the string, not to corrupt the score.

Solution 5

double test2 = 87.2345524523452;
double test3 = Math.Round(test2, 2);

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Comments

[Dirk Vollmar]

And you most probably want to use Math.Round(87.123453563566, 2, MidpointRounding.AwayFromZero);.

[Josue Rocha]

This is just what I was looking for, the functions that do the same as Excel ROUNDUP & ROUNDOWN functions. Thanks a lot!

[Slagmoth]

You might put an example of that in your answer... I know this is old but it could help.

[Krish]

I would like to convert/round the following value string value="12.6" and need to store it in to an integer...

[Tronald]

This is the best answer!