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Function Overloading in C++

  • Difficulty Level : Easy
  • Last Updated : 17 Jun, 2021

Function overloading is a feature of object oriented programming where two or more functions can have the same name but different parameters.

When a function name is overloaded with different jobs it is called Function Overloading.

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In Function Overloading “Function” name should be the same and the arguments should be different.

Function overloading can be considered as an example of polymorphism feature in C++.

Following is a simple C++ example to demonstrate function overloading.


#include <iostream>
using namespace std;
void print(int i) {
  cout << " Here is int " << i << endl;
void print(double  f) {
  cout << " Here is float " << f << endl;
void print(char const *c) {
  cout << " Here is char* " << c << endl;
int main() {
  return 0;


Here is int 10 
Here is float 10.1 
Here is char* ten

How  Function Overloading works?

  • Exact match:- (Function name and Parameter)
  • If a not exact match is found:

               ->Char, Unsigned char, and short are promoted to an int.

               ->Float is promoted to double

  • If no match found:

               ->C++ tries to find a match through the standard conversion.

  1. Function overloading and return type
  2. Functions that cannot be overloaded in C++
  3. Function overloading and const keyword
  4. Function Overloading vs Function Overriding in C++

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