rounding with specific decimals c #

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rounding with specific decimals c #

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#1 by (4 votes)
#2 by (-1 votes)

2

Hi, I would like to see if you can help me. I want to round a value with 2 decimals but at a point value.

for example, if the decimal value is between 0 and 0.49, it remains at 0.50 if the decimal value is between 0.51 and 0.99 goes to the next integer with decimal 00.

thank you very much

c#

asked by Pablo 17.09.2018 в 21:19

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2 answers

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score 4 · Answer 1

You must use the function Math.Ceiling in the following way if you want to round up in values of 0.5:

var resultado = Math.Ceiling(valor * 2) / 2;

Or also:

var resultado = Math.Ceiling(0.22 / 0.5) * 0.5;

If for example you want to round up to the next value closer to 0.05, it would be like this:

var resultado = Math.Ceiling(valor * 20) / 20;
// o
var resultado = Math.Ceiling(0.22 / 0.05) * 0.05;

Generalizing:

private double RedondeoArriba (double valor, double paso)
{
     return Math.Ceiling(valor/ paso) * paso;
}

score -1 · Answer 2

Use the Math.Round ()

method

With this you can round a value of type Double or Decimal

Example:

using System;

public class Sample {
   static void Main() {
      Console.WriteLine(Math.Round(3.44m, 1)); 
      Console.WriteLine(Math.Round(3.45m, 1)); 
      Console.WriteLine(Math.Round(3.46m, 1)); 
      Console.WriteLine();

      Console.WriteLine(Math.Round(4.34m, 1)); 
      Console.WriteLine(Math.Round(4.35m, 1)); 
      Console.WriteLine(Math.Round(4.36m, 1)); 
   }
}
// The example displays the following output:
//       3.4
//       3.4
//       3.5
//       
//       4.3
//       4.4
//       4.4