From what i've read, it doesn't really explain things too well


I don't understand float, double, decimal.... and when each should be used.... from my understanding floats are pretty much never used in C# only for extremely large numbers..... and double is used for pretty much everything.... I also heard decimal is used for more precision and used for money a lot....



so say you had a variable with a value of 2.34..... You should use decimal over double? I don't get it.....




all the stuff i've read on this subject is still very ambiguous to me,.... it's very frustrating











EDIT: Would you guys say this is accurate for C# too? if so, that clarifies things a bit, so i'm hoping it's accurate information

http://www.mrexcel.com/forum/microsoft-access/152657-what-does-double-data-type-mean.html

This post was edited by ferf on Aug 14 2015 12:34am

also had another question..... say i had a variable with the value of 6

wouldn't it be better to use the datatype "byte" or "sbyte" over "int"?

rule of thumbs:
if it's money, use decimal
if it's not money but uses decimal places, use double
if it's an integer value, use int
(personally i use long for ids, but dunno what the standard is for that.)

you almost never wanna use byte, ubyte, short, ushort, uint, etc. dont overanalyze. it's a very small part of programming. use the rule of thumb and move on. focus on other things.

This post was edited by carteblanche on Aug 14 2015 05:45pm

thanks!

regarding the float / double question:

float and double are both used for decimal values, but there is different between these two.

> float got only 6 digits behind the decimal point
> double got 14 or 15 digits (didnt remember if its 14 or 15 digits)

this results in a larger bit value for your numbers, but for console applications it dosnt matter.
thats why you should normaly use double instead of float.

float will be used for some time critical programs / uCs project.

ah thanks that clarifies things a lot!

and the reason you use certain data types is for memory.

you don't want to do something like this

double num = 6;

where u can use an int, as int is only 16 bits and a double is 64 bits, youll be using more memory than needed when assigning variables

Are you trolling? I hope you're trolling.

I think you may be trolling


dafuq?

Explain?