Overloading in C++

 

#include<iostream>

using namespace std;

int sum(int x,int y)

{

    return (x+y);

}

int sum(int a)

{

 

    return ((a)+(a-1));

   

}

int factorial(int n)

{

    return (n)*(n-1);

}

int main()

{

   

    cout<<"Sum is: "<<sum(3,5)<<endl;

    cout<<"Sum is: "<<sum(3)<<endl;

    cout<<"factorial is: "<<factorial(3)<<endl;

    return 0;

}