Convert C function to Vb .net [Resolved]

[James_Carlson]

I tried to covert this but couldnt figure out what i missed
(I think % is mod????? as i dont know C )

int
sum(int n)
{
	int	ret;

	ret = 0;

	while (n > 0) {
		ret = ret + (n % 10);
		n = n / 10;
	}

	return (ret);
}

Public Function sum(ByVal n As Integer) As Integer
 
        Dim ret As Integer = 0
 
        Do While n > 0
            ret = ret + (n Mod 10)
            n = n / 10
        Loop
 
        Return ret
    End Function

i tested both these functions some times they give the same return value and sometimes they do not...

If n is 25 they both return 7

if n is 36 C++ returns 9, vb returns 10


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thanx worked great, took me a while to figure out it i got it working properly

[nemaroller]

On the first iteration: The VB function rounds 3.6 up to 4, whereas the C# function truncates the .6, and makes it 3.

If you put OPTION STRICT ON, in your VB code at the top, you would see it errors saying a double cannot be converted to an integer. So you must be explicit by using the following code below. VB can only assume you want to round, unless you tell it otherwise.

I'm not a Math whiz, so I'm not sure which is the correct version (VB vs C). But, you can make your VB function match your C by including math.floor:

Dim ret As Integer = 0
 
        Do While (n > 0)
            ret = ret + (n Mod 10)
            n = CInt(Math.Floor(n / 10))
           Loop
        Return ret