Program to reverse the elements of the given Array

#include<iostream.h>
#include<conio.h>
void main()
{
  clrscr();
  int ar[100];
  int r,t=0,i,j;
  for(i=0;i<100;i++)
  {
    ar[i]=0;
  }
  cout<<"Enter the range:(less than 100) "<<endl;
  cin>>r;
  cout<<" Enter the elements of the array:"<<endl;
  for(i=0;i<r;i++)
  {
       cout<<"Enter element number: "<<(i+1)<<endl;
       cin>>ar[i];
  }
  r=r-1;
  for(i=0;i<(r/2);i++)
  {
    t=ar[i];
    ar[i]=ar[r-i];
    ar[r-i]=t;
  }
  cout<<"The reversed elements of the array:"<<endl;
  for(i=0;i<r+1;i++)
  {
    cout<<ar[i];
  }
  getch();
}