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class Car;
class Apple;
class Apple
{
public:
void abc(Car *aCar);
};
class Car
{
public:
Apple anApple;
void bcd(){ cout<<"The car is excuted!"<<endl;}
};
void Apple::abc(Car *aCar)
{
aCar->bcd();
}
int main()
{
Apple app;
Car car;
app.abc(&car);
return 0;
}