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Learn Object-Oriented Programming in C++

Overloading Functions

Explore the concept of function overloading in C++, which enables you to define multiple versions of a function with different argument types. Understand how this feature helps write modular, memory-efficient code, and prepares you for advanced topics like polymorphism in object-oriented programming.

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Each function has a specific number of arguments which have to be passed when calling it. If we increase or decrease the number of arguments in the call, we’ll get a compilation error:

C++
#include <iostream>
using namespace std;
double product(double x, double y){
  return x * y;
}
int main() {
  cout << product(10, 20) << endl; // Works fine
  cout << product(10) << endl; // Error!
}

The compiler doesn’t know how to handle arguments it wasn’t expecting. However, one of the coolest things we can do with functions is that we can overload them.

What is Overloading?

Overloading ...