Function Overriding in C++

Function Overriding in C++

 

Function overriding in C++ is termed as the redefinition of base class function in its derived class with the same signature i.e. return type and parameters. If derived class defines same function as defined in its base class, it is known as function overriding in C++. It is used to achieve runtime polymorphism.

 

SYNTAX :

public class baseClass {
  access_modifier:
    //overridden function
    return_type functionName(){ }
  };
}

public class derivedClass : public baseClass {
  access_modifier:
    //overriding function
      return_type functionName(){ }
  };
}

 

 

CODE :

//C++ program to demonstrate function overriding
#include <iostream>
using namespace std;

class baseClass {
public:
void print() {
cout << “The Base Function.” << endl;
}
};

class derivedClass : public baseClass {
public:
void print() {
cout << “The Derived Function.” << endl;
}
};

//Driver code
int main() {

derivedClass d1;
d1.print();

return 0;
}

 

OUTPUT:

The Derived Function