Program to illustrate RETURN BY REFERENCE

#include<iostream.h>
#include<conio.h>
int &max(int &a,int &b)
    {
      if(a>b)
        return a;
       else
          {
            return b;
          }
     }
void main()
{ clrscr();
int a,b;
cout<<"enter 2 nos";
cout<<"\n\n";
cin>>a;
cout<<"\n\n";
cin>>b;
max(a,b)=1;
if(a==1)
  {
  cout<<"\n\n";
  cout<<"a is greater";
  }
if(b==1)
  {
   cout<<"\n\n";
   cout<<"b is greater";
  }
getch();
}