从child调用父方法，类似于调用“super”（C ++）

Question

Is it possible to "reuse" a parent method in a child method and add functionality, just like with the super operator in Java?

parent.method(int a){
  a++;
}

child.method(int a /*would be nice w/out*/){
  printf("%d",a);
}

I know that this is probably quite a basic question, sorry about that.

I know I can just copy/paste the method to the child class and add the functionality there, by overloading; I'm looking for a more convenient way though.

Answer 1

You can use __super to do this, but it is a Microsoft extension.

void CChild::function( int nParam )
{
    __super::function( nParam );
}

Alternatively you can explicitly call the base implementation from the derived class:

void CChild::function( int nParam )
{
    CParent::function( nParam );
}

Answer 2

You can invoke the parent member function in a child member function by qualifing the member function name with the name of the parent class:

void child::method()
{
    parent::method();
}

Answer 3

Yes, there is no super keyword, but you just give the name of the parent class instead.

int child::method(int a ){ 
  // call base class
  int i = parent::method(a);
  printf("%d",a); 
} 

Answer 4

parent.method(int a){
  a++;
}

child::method(int a /*would be nice w/out*/){
  printf("%d",a);
  parent::method(a);
}