Function Overloading

 Function overloading:

The procedure which allows multiple functions to have same name but differ in number of parameters and types of parameters.

In function overloading, function’s argument list is called function signature.

Declaration and definition of function overloading:

To overload a function name, any two definition of the function must have

1.    Functions have same name

2.    Functions have different signature

Declaration

void display();

void display(int);

void display(float);

void display(int,float);

Definition:

void display()

{

            cout<<”function overloading”;

}

void display(int x)

{

            cout<<x;

}

void display(float y)

{

            cout<<y;

}

void display(int a,float b)

{

            cout<<a<<b;

}

Advantages of function overloading:

Eliminating the use of different function names for same operation

Helps to understand, debug and grasp easily

Easy to maintain the code

Better understanding of the relation between the program and the outside the world.