#include <stdio.h>

int main() 
{
    int n=5;
    int arr[n]={11,22,33,44,55};
    int key=33;
    int low=0,high=n-1,found=0;
    while(low<=high)
    {
        int mid=(low+high)/2;
        if(arr[mid]==key)
        {
            printf("Found it");
            found-1;
            break;
        }
        else if(arr[mid]<key)
        {
            low=mid+1;
        }
        else
        {
            high=mid-1;
        }
    }
    if(!found)
    {
        printf("Not found");
    }
return 0;
}