Write a C program to search for an element in an array using Binary search

#include<stdio.h>
#include<conio.h>
int binarysearch(int,int[],int);
 void main()
 {
   int a[10],i,item,n;
   clrscr();
   printf("enter the size of the array:");
   scanf("%d",&n);
   for(i=1;i<=n;i++)
   {
     printf("Element[%d]:",i);
     scanf("%d",&a[i]);
   }
     printf("\n enter ther item to be searched:");
     scanf("%d",&item);
     binarysearch(n,a,item);
     getch();
   }

 int binarysearch(int n,int a[],int item)
  {
    int beg=1,end=n,mid;
    while(beg<=end)
  {
    mid=(beg+end)/2;
     if(item==a[mid])
      {
    printf("item %d is found at location %d",item,mid);
    return;
      }
     if(item > a[mid])
      {
    beg=mid+1;
      }
       else
    end=mid-1;
   }
    printf("\n item %d is not found",item);
    return;
  }