Question

How and when would I call a super class method? Please referr to code segment for the two options:

class SuperClass {
public:
 void method();
};

class SubClass : public SuperClass {
public:
 void someOtherMethdo(){
   this->method();
   SuperClass::method();
 }
};

Answer 1

using this->method() you call a function that is either implemented in your superclass, either by your own class.

When using superClass::method(), you make sure to call the one implemented by your parent.

#include <iostream>
#include <string>

class A {
    public:
    void func() {
        std::cout << "A func" << std::endl;
    }
};

class B : A {
    public:                                   
    void func() {
        std::cout << "B func" << std::endl;
    }

    void exec() {
        this->func();
        A::func();
    }
};

int main() {
    B b;

    b.exec();
    return 0;
}

This sample code will output

B func
A func