Program for passing individual structure members through function

#include<iostream.h>
#include<conio.h>
void fun(int d,int m,int y)
 {
  d++;
  y=y+m;
 cout<<"\n";
 cout<<d<<"-"<<m<<"-"<<y;
 cout<<"\n\t";
 }
void main()
{
clrscr();
 struct dob
  {
   int da,mo,ye;
  }var;
  cout<<"\n";
  cout<<"enter date";
  cin>>var.da;
  cout<<" -";
  cin>>var.mo;
  cout<<" -";
  cin>>var.ye;
  fun(var.da,var.mo,var.ye);
  cout<<"\t\n\n";
  cout<<var.da<<"-"<<var.mo<<"-"<<var.ye;
getch();
}