void calc(int num)
{
Handler* next;
next = new ConcreteHandler2;
next->request(num);
delete next;
}
void request(int num)
{
if(num % 2 == 0)
{
cout << num << " is multiple of 2." << endl;
Handler* next = new ConcreteHandler3();
next->request(num);
delete next;
}
else
cout << num << " is not multiple of 2." << endl;
}
