Write a program to search element from array using Binary Search

#include<iostream.h>

#include<conio.h>

 void main()

 {

 int n,a[20],i,item;

 clrscr();

 cout<<"Enter the size of array :-";

 cin>>n;

 int beg=1,end=n,mid=(beg+end)/2;

 cout<<"Enter the elements of the array in sorted form :-";

 for(i=1;i<=n;i++)

            cin>>a[i];

 cout<<"\nEnter the element you  want to search:-"<<endl;

 cin>>item;

 while(a[mid]!=item && beg!=end)

             {

              if(a[mid]<item)

                        beg=mid+1;

             else

              end=mid-1;

            mid=(beg+end)/2;

             }

 if(a[mid]==item)

 cout<<"\n"<<item<<" is found at the location:- "<<mid ;

 else

 cout<<"item does not found in list";

getch();

}