7-6

#include <stdio.h>
int main(void)
{
   int a[10]={1,2,3,4,5,6,7,8,9,10};
   int low,high,mid,n=10,x;
  printf("Enter x:");
  scanf("%d",&x);
  low=0;high=n-1;
  while(low<=high)  {
    mid=(low+high)/2;
    if(x==a[mid])
    break;
    else if(x<a[mid])
    high=mid-1;
    else
    low=mid+1;
  }
  if(low<=high)
  printf("Index is %d
",mid);
  else
  printf("Not Found
");
  return 0;
}