This zyLab activity prepares a student for a full programming assignment. Warm up exercises are typically simpler and worth fewer points than a full programming assignment, and are well$-$suited for an in$-$person scheduled lab meeting or as self$-$practice.

For each of the following steps, end the program's output with a newline.

$(1)$ Write a program that outputs the following. $(1$ pt$)$

Hello world!

$(2)$ Update to output the following. $(1$ pt$)$

Hello world!

How are you?

$(3)$ Finally, update to output the following. $(1$ pt$)$

Hello world!

How are you?

$($I$\text{'}$m fine$).$