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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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v_12_11
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allison
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virt.cpp
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C/C++ Source or Header
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1994-09-05
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530b
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44 lines
LISTING 7 - Illustrates virtual functions
// virt.cpp
#include <iostream.h>
// Base class
class B
{
public:
virtual void f()
{
cout << "B::f" << endl;
}
};
// Derived class
class D : public B
{
public:
virtual void f()
{
cout << "D::f" << endl;
}
};
main()
{
B *bp[2]; // Heterogeneous array
B b;
D d;
bp[0] = &b;
bp[1] = &d;
for (int i = 0; i < 2; ++i)
bp[i]->f();
return 0;
}
/* Output:
B::f
D::f
*/