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#ifdef DO_VIRTUAL_INHERITANCE
#define VIRTUAL virtual
#else
#define VIRTUAL
#endif
#include <stdio.h>
class Base
{
public:
Base(int val) : m_base_val (val) {}
virtual ~Base() {}
virtual void
forcast(int input) {
int future_val = m_base_val + input * 1;
printf("Forcasting %d\n", future_val);
}
protected:
int m_base_val;
};
class DerivedA : public VIRTUAL Base
{
public:
DerivedA(int val) : Base(val*2), m_a_val(val) {
printf("DerivedA::ctor()->\n");
printf("m_base_val=%d\n", m_base_val);
printf("m_a_val=%d\n", m_a_val);
}
virtual ~DerivedA() {}
private:
int m_a_val;
};
class DerivedB : public VIRTUAL Base
{
public:
DerivedB(int val) : Base(val), m_b_val(val*3) {
printf("DerivedB::ctor()->\n");
printf("m_base_val=%d\n", m_base_val);
printf("m_b_val=%d\n", m_b_val);
}
virtual ~DerivedB() {}
virtual void
forcast(int input) {
int future_val = m_b_val + input * 2;
printf("Forcasting %d\n", future_val);
}
private:
int m_b_val;
};
int
main(int argc, char **argv)
{
DerivedA* dA = new DerivedA(10);
DerivedB* dB = new DerivedB(12);
Base *array[2] = {dA, dB};
Base *teller = NULL;
for (int i = 0; i < 2; ++i) {
teller = array[i];
teller->forcast(i); // Set breakpoint here.
}
return 0;
}
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