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Should 0.5 round up or down?

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L Lost User
```
     float n = 0.2f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );
     
     n = 0.5f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );

     n = 0.6f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );

     n = 1.5f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );

     n = 1.2f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );

     n = 1.7f;
     Console.WriteLine( $"{n:F2}: {Math.Round( n, 0 ):F2}" );
```
Answer: 0.20: 0.00 0.50: 0.00 0.60: 1.00 1.50: 2.00 1.20: 1.00 1.70: 2.00

"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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Bosse62

wrote on last edited by

#21

I learned in school: "When you have a 5 to round from; the number to round to shall be even." Let me give you some examples: Rounding to no decimals: 0.5 --> 0 1.5 --> 2 2.5 --> 2 3.5 --> 4 Rounding to one decimal: 0.35 --> 0.4 0.45 --> 0.4 0.55 --> 0.6 0.65 --> 0.6
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