Program to do Binary Search using C

#include<stdio.h>
int main()
{
int ar[10]={0,1,2,3,4,5,6,7,8,9};
int lo=0;
int mid,item,i;
int up=9;
int flag=0;

printf("\nEnter an item to search:-");
scanf("%d",&item);

for(i=0;i<10;i++)
{
mid=(lo+up)/2;
if(ar[mid]==item)
{

flag=1;
}
else
{
if(ar[mid]<item)
{
lo=mid+1;
}
if(ar[mid]>item)
{
up=mid-1;
}
}
}
if(flag==0)
{
printf("\nitem not found\n\n");
}
else
printf("\nElement found %d\n\n",mid);

return 0;
}