In python Step $3.$ Define a Basic Function:

Look at the comment at the beginning of the main file to show you where to place the code

Write a function named greet$\_$user that accepts a single parameter, name, and prints a greeting message like

$$Hello$,[$name$]!.$

Look at the comment at the beginning of the main file to show you where to place the code

Call the header$\_$caller function with input $3$ from the main function then call the greet$\_$user function from the

main function with names: Einstein and Newton.

Output:

$====================$

Step: $3$

$====================$

Hello, Einstein!

Hello, Newton!