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#include <iostream>
using namespace std;
class Base {
public:
virtual void fn(int x) {
cout << "In Base class, int x = " << x << endl;
}
};
class SubClass : public Base {
public:
// º¯ÊýµÄÖØÔØ,ÕâÑùµÄÖØÔØ·½Ê½,ÔÚJavaÖÐÄÜÐÐ,ÔÚC/C++ÖÐÈ´²»ÐÐ
virtual void fn(float x) {
cout << "In SubClass, float x = " << x << endl;
}
};
void test(Base& b) {
int i = 1;
b.fn(i);
float f = 2.0;
b.fn(f);
}
int main() {
Base bc;
SubClass sc;
cout << "Calling test(bc)\n";
test(bc);
cout << "Calling test(sc)\n";
test(sc);
return 0;
}
Calling test(bc)
In Base class, int x = 1
In Base class, int x = 2
Calling test(sc)
In Base class, int x = 1
In Base class, int x = 2
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package cn.vicky;
public class MyTest {
public void add(int i) {
System.out.println("in parent");
}
public static void main(String[] args) {
MyTest2 m2 = new MyTest2();
m2.add(1);
m2.add(1.1);
}
}
class MyTest2 extends MyTest {
public void add(double i) {
System.out.println("in child");
}
}
in parent
in child
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