C++ referans argümanları??

//argumanın referans olarak aktarılması 
  #include <iostream> 
  using namespace std; 
   
  int main() 
  { 
  void intfrac(float, float&, float&); 
  float number, intpart, fracpart; 
   
  do 
  { 
  cout << "\nEnter a real number: "; 
  cin >> number; 
   
  intfrac(number, intpart , fracpart); 
   
  cout << "Integer part is " << intpart << ", fraction part is " << fracpart << endl; 
  } 
  while (number != 0.0); 
  return 0; 
  } 
   
   
  /------------------------------------- 
  void intfrac(float n, float& intp, float& fracp) 
  { 
  long temp = static_cast<long>(n); 
  intp = static_cast<float>(temp); 
  fracp = n - intp;  
  }