. NET numeric type precision

Float type occupies 32bit space, only 7-bit precision, the following program
public class Floatprecision
{
public static void Main ()
{
Console.WriteLine ((int) 123456789F);
}
}
The output result is 123456792.

Double for 64bit space, 15~16 bit precision, the following procedure
public class Doubleprecision
{
public static void Main ()
{
Console.WriteLine ((long) 123456789012345678D);
}
}
Output is 123456789012345680

Decimal occupies 128bit space, 28-bit precision, as described in MSDN:
This type is useful the for applications (such as accounting) where rounding errors must to be avoided.