How to call a parent class function from derived class function in C++?

The following is an example to call parent class function from derived class function.

Example

 Live Demo

#include <bits/stdc++.h>
using namespace std;
class p1 {
   public:
   void first() {
      cout << "\nThe parent class p1 function is called.";
   }
};
class d1 : public p1 {
   public:
   void first() {
      cout << "The derived class d1 function is called.";
      p1::first();
   }
};
int main() {
   d1 d;
   d.first();
   return 0;
}

Output

The derived class d1 function is called.
The parent class p1 function is called.

In the above program, a parent class p1 is created and a function first() is defined in it.

class p1 {
   public:
   void first() {
      cout << "\nThe parent class p1 function is called.";
   }
};

A derived class is created, which is inheriting parent class p1 and overloading the parent class function first().

class d1 : public p1 {
   public:
   void first() {
      cout << "The derived class d1 function is called.";
      p1::first();
   }
};

The function of d1 class is calling the function of p1 class.

p1::first();

karthikeya Boyini

Updated on 26-Jun-2020 09:18:28

• Related Questions & Answers
• How to call the constructor of a parent class in JavaScript?
• How to call parent constructor in child class in PHP?
• How to call a parent window function from an iframe using JavaScript?
• How to explicitly call base class constructor from child class in C#?
• How to call a JavaScript function from C++?
• How to Call a Lua function from C?
• Accessing protected members in a C++ derived class
• How to call a JavaScript Function from Chrome Console?
• First class function in JavaScript
• How to call a Java function inside JavaScript Function?
• How to get the return value from a function in a class in Python?
• How to call a function in JavaScript?
• What all is inherited from parent class in C++?
• How to call a JavaScript function from an onClick event?
• How to call a JavaScript function from an onsubmit event?