Function Overloading in C++

Function Overloading is a method to define multiple functions with the same name. But different tasks are performed based on the number, type of arguments contained in that function.

Example :

#include <iostream.h> int add(int, int); double add( double , double ); int add(int , int , int ); int main() { cout << "Addition of 2 integers::" <cout << "Addition of 2 double integers::" << add (12.5, 13.2) << '\n'; cout << "Addition of 3 integers::" << add (10, 20) << '\n'; return 0; } int add (int a, int b) { return a+b; } double add ( double x, double y) { return x+y; } int add ( int u, int v, int w ) { return u+v+w; }

Result :
In the above example there are multiple "add" functions, but with different arguments, types. So based on the type and arguments the respective function is called.