35 lines
670 B
C++
35 lines
670 B
C++
|
A base pointer to access derived objects
|
||
|
|
#include <iostream>
|
||
|
|
using namespace std;
|
||
|
|
class BaseClass {
|
||
|
|
int i;
|
||
|
|
public:
|
||
|
|
void setInt(int num) {
|
||
|
|
i = num;
|
||
|
|
}
|
||
|
|
int getInt() {
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
class derived: public BaseClass {
|
||
|
|
int j;
|
||
|
|
public:
|
||
|
|
void setJ(int num) {
|
||
|
|
j = num;
|
||
|
|
}
|
||
|
|
int getJ() {
|
||
|
|
return j;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
BaseClass *baseClassPointer;
|
||
|
|
derived d;
|
||
|
|
baseClassPointer = &d; // BaseClass pointer points to derived object
|
||
|
|
// access derived object using BaseClass pointer
|
||
|
|
baseClassPointer->setInt(10);
|
||
|
|
cout << baseClassPointer->getInt() << " ";
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|