#include <iostream>
using namespace std;
 
class job_interface {
public:
	virtual void job() = 0;
};
 
class job1 : public job_interface {
public:
	virtual void job() { cout << "job1" << endl; }
};
 
class job2 : public job_interface {
public:
	virtual void job() { cout << "job2" << endl; }
};
 
int main()
{
	job1 j1;
	job2 j2;
 
	job_interface *jobs[] = { &j1, &j2 };
 
	for (int i = 0; i < sizeof(jobs) / sizeof(jobs[0]); i++) {
		jobs[i]->job();
	}
}

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