Why int remainder=(int)(Math.DivRem(MaxValue, 2, out remainder)) is 5 where int MaxValue = 10!!!;

[Alexander Gorbylev]

Hi all!

Test:

-----------------------------------

int MaxValue = 10; // =current value

int remainder=(int)(Math.DivRem(MaxValue, 2, out remainder));

RectangleF[] fillRectangles = new RectangleF[(int)(MaxValue / 2) +
remainder];

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(int)(MaxValue / 2) = 5 - it's right,

BUT:

remainder is 5

!!!!!!!

Why? Total fillRectangles.Lenght = 10

))

 

[Jon Skeet [C# MVP]]

int MaxValue = 10; // =current value

int remainder=(int)(Math.DivRem(MaxValue, 2, out remainder));

You're assigning a value to remainder twice in this statement - once
with the return value of DivRem, and once with the out parameter. The
out parameter will be assigned first, then the return value. The
return value is 5, hence "remainder" is 5 after the statement has
executed.

If you *only* want the remainder, just use the % operator or don't use
the result of DivRem. If you want both the remainder and the divisor,
use two different variables.

Jon

 

[Ben Schwehn]

int remainder=(int)(Math.DivRem(MaxValue, 2, out remainder));

the out parameter is overwritten by the return value.


Perhaps want you want to do is:


int remainder;
int result = (int)(Math.DivRem(MaxValue, 2, out remainder));


ben

 

[Alexander Gorbylev]

He-he...

Distraction on last degree and hurly-burly...