binary calculation overflow?

[#Christopher#]

I had to write a binary to decimal conversion program for a exercise in a c++ book.

My program works fine, but it seems to be running out of memory space for the variable. If i use "int" to declare my variables the program will work fine up to an output of 1024. I tried even declaring as __int64 and the code will output correctly up to 524XXX (19bit).

edit: guess i should make it clear how entering a 16bit binary for instance will not output correctly as 65535 when variables are declared "int". It output instead to some garbage of 186 or something. I have to declare variables to __int32 to output 16bit and _int64 outputs up to around 19bit

this doesnt seem right..

does my code seem ok?

#include <iostream>

using namespace std;

int main()
{
	__int64 binary;
	__int64 total = 0;
	
	cout << "Enter binary number: ";
	cin >> binary;

	for ( int count = 1;binary != 0;count *= 2)
	{
		if ( binary == 1 )
		{
			total += count;
			binary = 0;
			break;
		}
		if ( binary % 2 )
			total += count;
		binary /= 10;
	}
		

	cout << "\nDecimal equivilant is: " << total << endl;
	
	cout << "\n\n";
	system("PAUSE");

	return 0;
}