An example of function name overloading within a C++ class. In this program the constructor is overloaded as well as one of the methods to illustrate what can be done in C++ programming language.

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#include 

class many_names {
   int length;
   int width;
public:
   many_names(void);             // Constructors
   many_names(int len);
   many_names(int len, int wid);
   void display(void);           // Display functions
   void display(int one);
   void display(int one, int two);
   void display(float number);
};

many_names::many_names(void)
{
   length = 8;
   width = 8;
}

many_names::many_names(int len)
{
   length = len;
   width = 8;
}

many_names::many_names(int len, int wid)
{
   length = len;
   width = wid;
}

void many_names::display(void)
{
   cout << "From void display function, area = " << length * width << "\n";
 }
 
 void many_names::display(int one)
 {
    cout << "From int display function, area = " << length * width << "\n";
 }
 
 void many_names::display(int one, int two)
 {
    cout << "From two int display function, area = " << length * width << "\n";
 }
 
 void many_names::display(float number)
 {
    cout << "From float display function, area = " << length * width << "\n";
 }
 
 main()
 {
 many_names small, medium(10), large(12, 15);
 int gross = 144;
 float pi = 3.1415, payroll = 12.50;
 
    small.display();
    small.display(100);
    small.display(gross,100);
    small.display(payroll);
 
    medium.display();
    large.display(pi);
 }
 
 // Result of execution
 // From void display function, area = 64
 // From int display function, area = 64
 // From two int display function, area = 64
 // From float display function, area = 64
 // From void display function, area = 80
 // From float display function, area = 180