C++ Function Overloading:

In some programming languages, like c++ function overloading or method overloading is the ability to create multiple functions of the same name with different implementations.

Rules of Function Overloading in C++

  • These functions have different parameter type. sum(int a, int b) sum(double a, double b)
  • These functions have a different number of parameters. sum(int a, int b) sum(int a, int b, int c)
  • These functions have a different sequence of parameters. sum(int a, double b) sum(double a, int b)
#include<iostream>
using namespace std;

int sum(float a, int b){
    cout<<"Using function with 2 arguments"<<endl;
    return a+b;
}

int sum(int a, int b, int c){
    cout<<"Using function with 3 arguments"<<endl;
    return a+b+c;
}

// Calculate the volume of a cylinder
int volume(double r, int h){
    return(3.14 * r *r *h);
}

// Calculate the volume of a cube
int volume(int a){
    return (a * a * a);
}

// Rectangular box
int volume (int l, int b, int h){
    return (l*b*h);
}

int main(){
    cout<<"The sum of 3 and 6 is "<<sum(2,4)<<endl;
    cout<<"The sum of 3, 7 and 6 is "<<sum(3, 7, 8)<<endl;
    cout<<"The volume of cuboid of 3, 7 and 6 is "<<volume(3, 7, 5)<<endl;
    cout<<"The volume of cylinder of radius 3 and height 6 is "<<volume(2, 6)<<endl;
    cout<<"The volume of cube of side 3 is "<<volume(3)<<endl;
    return 0;
}

Output:

The sum of 3 and 6 is Using function with 2 arguments
6
The sum of 3, 7 and 6 is Using function with 3 arguments
18
The volume of cuboid of 3, 7 and 6 is 105
The volume of cylinder of radius 3 and height 6 is 75
The volume of cube of side 3 is 27

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