Write a C++ program to illustrate a function overloading. W rite two Overloading Functions for adding two numbers.

AIM: Write a C++ program to illustrate a function overloading. W rite two Overloading Functions   for adding  two  numbers.

THEORY:

 Since functions' names are in this case the same, we must preserve uniqueness of signatures, by changing something from the parameter list (last three alienees).

If the functions' signatures are sufficiently different, the compiler can distinguish which function was intended to be used at each occurrence. This process of searching for the appropriate function is called function resolution and can be quite an intensive one, especially if there are a lot of equally named functions.

Programming languages supporting implicit type conventions usually use promotion of arguments (i.e. type casting of integer to floating-point) when there is no exact function match. The demotion of arguments is rarely used.

When two or more functions match the criteria in function resolution process, an ambiguity error is reported by compiler. Adding more information for the compiler by editing the source code (using for example type casting), can address such doubts.

The example code shows how function overloading can be used. As functions do practically the same thing, it makes sense to use function overloading.

 function int generateNumber(int MaxValue) {

   return rand * MaxValue

 }

 function int generateNumber(int MinValue, int MaxValue) {

   return MinValue + rand * (MaxValue - MinValue)

 }

SOURCE CODE:

#include<iostream>

using namespace std;

class MFO{

            public:

            int sum(int,int);

            float sum(float a ,float b){

                        return a+b;

                        }         

};

int MFO::sum(int a ,int b){

            return a+b;

}

int main(){

            MFO ob;

            cout<<"\n Sum of two integer numbers:"<<ob.sum(10,20);

            cout<<"\n Sum of two float numbers:"<<ob.sum(2.4f,7.1f);

            }