How can I get the number of decimal places of a decimal variable?
Eg: If I receive the number:
4.5 - should return 1
5.65 - should return 2
6.997 - should return 3
I know you can do this by converting to string , something like:
decimal CasasDecimais(decimal arg){
return arg.ToString().Substring(arg.ToString().LastIndexOf(",") + 1).Length;
}
And I've also seen this question of SOen, but I would welcome alternatives to these two forms.
It has more "elegant" solutions using pure mathematics, but would be much more complicated (one may be tempted to do a simple operation and will not work for all situations). The simplest is this:
(3.1415.ToString(CultureInfo.InvariantCulture)).Split('.')[1].Length
See running on dotNetFiddle .
Then there was an edit but for
decimalthe algorithm is the same.
If it is only in different ways, you would have to use a while
public static int casasDecimais(decimal d)
{
int res = 0;
while(d != (long)d)
{
res++;
d = d*10;
}
return res;
}