text: #include <iostream> 
  
  using namespace std; 
   
  void printHBD();
  void printHBD(string, int&);
  
  
  int main()  
  {  
    int myAge;
    printHBD();
    printHBD();
    cout << "Happy Birthday dear user\n";
    
    cout << "\nEnter your age \n";
    cin >> myAge; 
    cout << "1. My age is: " << myAge << endl;
    printHBD("Erin", myAge);
    cout << "2. My age is: " << myAge << endl;
    
  }
  
  void printHBD()
  {
  	cout << "Happy Birthday to you\n"; 	
  }
  
  void printHBD(string name, int& age)
  {
  	
  	cout << "Happy Birthday " << name;
  
  	age = age + 10;
  }
  