Adding,Subtracting 2 boolean arrays or 1 boolean array with a int

Hi folks,

I am trying to write a C++ class where i can add or subtract 2 seperate boolean arrays. If you look at my code, where I overload the first + operator, I get an error here because while performing the OR operation, I am trying to map a BOOL value into the class SETS value. So the compiler is asking for a SETS(BOOL) method. I'm pretty lost here and would sincerely appreciate any advise. Thanks in advance.

#include <iostream.h>

class sets
{
private:
bool *set;
int element;
public:
sets();
sets(bool []);
sets operator + (sets v)const;
sets operator * (sets v)const;
sets operator + (int f)const;
friend istream& operator >> (istream& istr,sets& v);
friend ostream& operator << (ostream& ostr,sets& v);
};

sets :: sets()
{
*set=0;
}

sets :: sets(bool x[])
{
set=x;
element=(sizeof(x)/sizeof(bool));
}
sets sets :: operator + (sets v)const
{
for (int i=0,j=0;i<element,j<element;i++,j++)
return sets(*(set+i) || *(v.set+j));
}
sets sets :: operator * (sets v)const
{
for (int i=0,j=0;i<element,j<element;i++,j++)
return sets(*(set+i) && *(v.set+j));
}
sets sets :: operator + (int f)const
{
if (f<=element && f > 0)
*(set+(f-1))=1;
for (int i=0;i<element;i++)
return sets(*(set+i));
}
ostream& operator << (ostream& ostr,sets& v)
{
for (int i=0;i<v.element;i++)
{ostr << "{" << *(v.set+i) << "}";}
return ostr;
}

int main()
{
sets s3;
int e1=4;

s3 = s3 + 5;
cout << s3;

}