[RESOLVED] Double issues

[blindlizard]

I am pulling my hair out with this. I have VB.Net code that works, but the C# alternative does not.

VB.Net
Dim MyVal as Double = 500 / 792
'MyVal then equals 0.631313131313131

C#
double MyVal = 500 / 792;
//MyVal then equals 0.0

How can I get the C# code to give me the same result as the VB.Net?

[jmcilhinney]

VB.NET allows more implicit conversions than C#. You are dividing an integer by an integer, which in C# will always produce an integer. You should find that:

double myVal = 500.0 / 792.0

will give you the correct value. You could also use:

double myVal = (double)500 / (double)792

Edit:
To clarify, it is the fact that you are dividing by an integer that is the issue. You can divide an integer by a double and get a double no problem, e.g. 500 / 792.0. I mispoke a little with regard to VB.NET. Implicit conversion is not the issue here, but rather what constitutes integer division. As I said, in C# (as for C and all its children) dividing by an integer returns an integer. In VB.NET, any division returns a floating-point number (usually Double but can be Single or Decimal in special cases) unless you specify integer division, which you do by using "\" instead of "/".

[blindlizard]

Ah, thank you! I did try (double)(500 / 760) but that was the same answer (0.0) probably because by the time I tell it to give me a double, it is already an integer.

[NoteMe]

Yes, that is correct. You have to convert them before you do the devision.


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