C++ program to add two numbers using function overloading

C++ Program which accept two numbers and print their sum using Function Overloading.

In this C++ example, we will see how to add two numbers using function overloading. Function overloading is a feature that allows us to have more than one function having same name but different number, type of sequence of arguments. Here we are defining three functions for the same purpose addition, based on the data type of arguments different function is called.

Source Code: 

/* Function overloading example. Where we can have
 * more than one functions with same name but different
 * number, type or sequence of arguments
 */
#include <iostream>
using namespace std;

int sum(int, int);
float sum(float, float);
float sum(int, float);

int main(){
   int num1, num2, x;
   float num3, num4, y;
   cout<<"Enter two integer numbers: ";
   cin>>num1>>num2;
   //This will call the first function
   cout<<"Result: "<<sum(num1, num2)<< endl;

   cout<<"Enter two float numbers: ";
   cin>>num3>>num4;
   //This will call the second function
   cout<<"Result: " <<sum(num3, num4)<< endl;

   cout<<"Enter one int and one float number: ";
   cin>>x>>y;
   //This will call the third function
   cout<<"Result: " <<sum(x, y)<< endl;
   return 0;
}
int sum(int a, int b){
   return a+b;
}
float sum(float a, float b){
   return a+b;
}
/* Remember that sum of int and float is float
 * so the return type of this function is float
 */
float sum(int a, float b){
   return a+b;
}

More:

• C++ program which accept two numbers and print their sum.

• C++ Program Add Two Numbers using Class and Function

Enter two integer numbers: 21 88
Result: 109
Enter two float numbers: 10.2 30.7
Result: 40.9
Enter one int and one float number: 20 16.4
Result: 36.4