Function Overloading in C++ with Example

Overloading refers to the use of the same thing for different purposes. C++ also permits the overloading of functions. It means that we can use the same function name to create functions that perform a variety of different tasks.

Function Overloading:

In Function Overloading, we can design a family of functions with one function name but with different argument lists. The function would perform different operations depending on the argument list in the function call. It simply means that a family functions with one function name but with different argument lists. The function would perform different operations depending on the argument list in the function call.

Program:

#include<iostream.h>
#include<conio.h>
int area(int);
int area(int, int);
float area(float);
int main()
{
cout<<"The area of Square:"<<area(12)<<"\n";
cout<<"The area of Rectangle:"<<area(12,15)<<"\n";
cout<<"The area of Circle:"<<area(7)<<"\n";
return 0;
}
int area(int s)
{
return(s*s);
}
int area(int l, int b)
{
return(l*b);
}
float area(float r)
{
return(3.14*r*r);
}

Output:
The area of Square: 144
The area of Rectangle: 180
The area of Circle: 153.86