#include
using namespace std;
class base {
int i, j;
public:
void set(int a, int b) {
i=a;
j=b;
}
void show() {
cout << i << " " << j << "\n";
}
};
class derived : public base {
int k;
public:
derived(int x) {
k=x;
}
void showk() {
cout << k << "\n";
}
};
int main()
{
derived ob(3);
ob.set(1, 2);
ob.show();
ob.showk();
return 0;
}
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