Help with maths in C++, not working properly

[ToySoldier92]

System::String ^ bin2dec( System::String ^ input )
{
	__int32 decvalue = System::Convert::ToInt32( input );

	int dec = decvalue;

	System::Array::Reverse( input->ToCharArray() );

	if ( input->Length > 0 )
	{
		int x = 0;
		for each ( int row in input->ToCharArray() )
		{
			dec = dec + ( row * 2 ^ x );

			x = x + 1;
		}
	}
	
	return "Result: " + dec.ToString() + " <";
}

Now, I'm pretty much a complete noob and I have no idea why it's doing weird stuff like this

When input is: 0
Output becomes: 96

When 1: 99
When 2: 102
When 3: 105
When 4: 107 [etc]

While it should convert the binary number to a decimal one. Now, I am not sure if it's the formula which is wrong, or wether it's the code. I'm guessing on the second one, as I'm pretty sure I am doing something wrong, but I don't know what...

[GCDEF]

That's .net, not C++. Wrong forum.

[ToySoldier92]

How can this be .net when it's made in Visual C++ Express Edition? :S

/More confused

[Skizmo]

How can this be .net when it's made in Visual C++ Express Edition?

Visual Studio is capable of many project types. You have to choose which type you want when you create a new project.

[ToySoldier92]

Visual Studio is capable of many project types. You have to choose which type you want when you create a new project.

Ah, I chose Windows Forms Application, apparently that is .net then?

[GCDEF]

Ah, I chose Windows Forms Application, apparently that is .net then?

Yes.

[ToySoldier92]

>< That explains why the things I was trying aren't working. Would you mind helping me out with this problem? Still would like to get it working..

[alanjhd08]

Well, you are doing some things wrong.

int dec = decvalue;

This gives you the answer you want. You can stop at this stage.

dec = dec + ( row * 2 ^ x );

row is the ascii code, so 0 will b 48, 1 will be 49 etc. For single digit in put, you are adding 2 * row to your original correct answer. So, for input of e.g. 1, you get 1 + 2*49 = 99.

Also, I think you should get 108, not 107 for input of 4