Thread: Problems porting from MSVC++ to Apple Developer Tools

I have code that compiles with no warnings on MSVC++ 6.0, and am trying to port it for a friend running the compiler in the Project Builder app for Mac OS. When he tries to compile, he gets an error

main.cpp:241: no match for `Bint& - Bint' operator

where I've indicated line 241 in the code below.

Here is the implementation of the function giving me problems:

Code:

bool Bint::operator~(void)
{
	int digit;
	for(int i=0;i<size;i++)
	{
		digit=digits[i];
		Bint& temp=Bint(&digit,1,base);
		*this=this->operator-(temp); //Subtract each digit, one at a time,
		//from the number
	}
	if(size==2 && digits[0]==0) //Check for 0
		return false;
	return true;
}

Line 241 is the one beginning with *this=this...

Here is the class definition:

Code:

class Bint
{
public:
	Bint(const char *init, int base);
	Bint(void);
	Bint&(Bint &init);
	~Bint();
	int GetSize(void) const {return size-1;};
	Bint operator+(Bint &second) const;
	Bint operator-(Bint &second) const;
	Bint operator=(Bint &second);
	bool operator~(void);
	friend ostream& operator<< ( ostream& os, Bint num);

private:
	Bint(const int *init, int size, int base);
	int *digits;
	int base;
	int size;
};

Does anybody have any ideas what my mistake is?

Replace that line with

Code:

*this = *this - temp; //Subtract each digit, one at a time,

gg