Demonstrate passing by reference - C++ Function

C++ examples for Function:Function Parameter

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Description

Demonstrate passing by reference

Demo Code

#include <iostream>
using namespace std;
int main()/*  w  w  w .  j ava  2  s  . c  om*/
{
   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;
}
// 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
}

Result


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