class SqrRoot {
    public static void main(String args[]) {
        double num,sroot,rerr,resquare;
        
        for(num = 1.0; num < 100.0; num++) {
            sroot = Math.sqrt(num);
            System.out.println("Square root of " + num + " is " + sroot);
            
            // compute rounding error
            resquare = (sroot * sroot);
            rerr = num - resquare;
            System.out.println("Rounding error: num + " - " + resquare + " = " + rerr);
            System.out.println();
        }
    }
}