1. The following code is supposed to compute the floor of the square root of the input value x. (The floor of a number n is the largest integer less then or equal to n.)

public static void main(String args[]) { int x; // input value Scanner input = new Scanner(System.in); // read input x = input.nextInt(); FloorOfX obj = new FloorOfX(); int result = obj.computeIt(x); System.out.println("The floor of the square root of " + x + " is " + result); input.close(); }

int computeIt(int x) { int result = 0; // will equal floor of sqrt(x) int temp1 = 1; int temp2 = 1; // compute floor while (temp1 < x) { ++result; temp2 += 2; temp1 += temp2; } // end while return result; }

This program contains an error:

1. What output does the program produce when x = 64?

2. Run the program and remove the error. Describe the steps that you took to find the error.

3. How can you make the program more user friendly and fail-safe?