ref.cpp

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// ref.cpp
// demonstrates passing by reference
#include <iostream>
using namespace std;

int main()
   {
   void intfrac(float, float&, float&);      //declaration
   float number, intpart, fracpart;          //float variables
   
   do {
      cout << "\nEnter a real number: ";     //number from user
      cin >> number;
      intfrac(number, intpart, fracpart);    //find int and frac
      cout << "Integer part is " << intpart  //print them
           << ", fraction part is " << fracpart << endl;
      } while( number != 0.0 );              //exit loop on 0.0
   return 0;
   }
//--------------------------------------------------------------
// intfrac()
// finds integer and fractional parts of real number
void intfrac(float n, float& intp, float& fracp)
   {
   long temp = static_cast<long>(n);  //convert to long int,
   intp = static_cast<float>(temp);   //back to float
   fracp = n - intp;                  //subtract integer part
   }