**Calculate the square root**

Suppose that your program needs to calculate the square root of a number.

**Design the algorithm and write the code**

Design the algorithm describing that process.

Write the code to calculate the square root and insert it into your program code.

**Compile and run your program**

Then you could compile, and run your program.

Your program should correctly calculate the square root.

(For reasons that will become apparent later, I will refer to the code that you inserted into your program asin-linecode.)