Which of the following is true of SSDs compared to traditional hard disks?

Here is a complete function that purports to return one of the roots of a quadratic given suitable parameters. It looks good, but fails to compile. Why?

``` //returns one of the roots of the quadratic equation //a*x*x + b*x + c = 0 a!= 0 double root1 (double a, double b, double c) { return (-b + sqrt(b*b-4*a*c))/(2*a); ```

In your own words discuss similarities and differences between a function and a small program.

What will be an ideal response?