#include ﹤iostream﹥
using namespace std;
class x
{protected: int a;public: x( ) {a=1; }
};
class x1;
virtual public x
{
public:
x1( )
{a+=1; cout﹤﹤"x1: "﹤﹤a﹤﹤","; }
};
class x2:
virtual public x
{
public:x2( )
{a+=2; cout﹤﹤"x2: "﹤﹤a﹤﹤","; }
};
class y:
public x1,
public x2
{
public:y( )
{ cout ﹤﹤"y: "﹤﹤a﹤﹤ endl; }
};
void main( )
{
y obj;
}
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