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Program for Operator Overloading and Friend Function concept

Posted By: Easy Tutor     Category: C++ Programming     Views: 20850

Write a Program which illustrates Operator Overloading and Friend Function concept in C++.

Code for Program for Operator Overloading and Friend Function concept in C++ Programming

/*www.DailyFreeCode.comDownload Projects, Sourcecodes, Tips and Tricks, Interview FAQs, Hotlinks and more....Logon to www.DailyFreeCode.com*/

#include <iostream.h>
#include <conio.h>

const size = 3;

class vector
{
  int v[size];
  public:
    vector();
    vector (int *x);
    friend vector operator * (int a,vector b);
    friend vector operator * (vector b,int a);
    friend istream & operator >> (istream &,vector &);
    friend ostream & operator << (ostream &,vector &);
};

vector :: vector()
{
  for(int i=0;i<size;i++)
     v[i]=0;
}

vector :: vector(int *x)
{
  for(int i=0;i<size;i++)
     v[i]=x[i];
}

vector operator * (int a,vector b)
{
 vector c;
  for(int i=0;i<size;i++)
   c.v[i]=a * b.v[i];
 return(c);
}

vector operator * (vector b,int a)
{
  vector c;
  for(int i=0;i<size;i++)
    c.v[i]=b.v[i] * a;
  return(c);
}

istream & operator >> (istream & din,vector & b)
{
  for(int i=0;i<size;i++)
   din>>b.v[i];
   return(din);
}

ostream & operator << (ostream & dout,vector & b)
{
   dout<<"(";//<<b.v[0];for(int i=0;i<size;i++)
    dout<<", "<<b.v[i];
   dout<<")";
   return(dout);
}

int x[size] = {2,4,6};

void main()
{
clrscr();
vector m;
vector n=x;

cout<<"Enter elements of vector m \n";
cin>>m;
cout<<endl;
cout<<"m="<<m<<endl;

vector p,q;
p=2*m;
q=n*2;

cout<<endl;
cout<<"p="<<p<<endl;
cout<<"q="<<q<<endl;
getch();
}
  
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Easy Tutor
Easy Tutor author of Program for Operator Overloading and Friend Function concept is from United States. Easy Tutor says

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