47 lines
766 B
C++
47 lines
766 B
C++
#include <iostream>
|
|
|
|
class A {
|
|
protected:
|
|
int a, b;
|
|
public:
|
|
A(int x=0, int y) {
|
|
a = x;
|
|
b = y;
|
|
}
|
|
virtual void print();
|
|
};
|
|
|
|
class B : public A {
|
|
private:
|
|
float p, q;
|
|
public:
|
|
B(int m, int n, float u, float v) {
|
|
p = u;
|
|
q = v;
|
|
}
|
|
B() { p = q = 0; }
|
|
void input(float u, float v);
|
|
virtual void print(float);
|
|
};
|
|
void A::print(void) {
|
|
cout << "A values : " << a << " " << b << "\n";
|
|
}
|
|
void B::print(float) {
|
|
cout << "B values : " << u << " " << v << "\n";
|
|
}
|
|
void B::input(float x, float y) {
|
|
p = x; q = y;
|
|
}
|
|
int doubleIt(A a) { return a.a * a.a; }
|
|
|
|
int main() {
|
|
A a1(10, 20), *ptr;
|
|
B b1;
|
|
b1.input(7.5, 3.142);
|
|
|
|
ptr = &a1;
|
|
ptr->print();
|
|
ptr = &b1;
|
|
ptr->print();
|
|
}
|