$5.(10)$ Given the following variables:

$>>$ mystring$="$No Halloween Parties!!";

$>>$ yourchvec$=\text{'}$Be Safe!!$\text{'}$;

Explain why length$($yourchvec$)$ is $9$ but length$($mystring$)$ is $1.$

Also, show how you could index into mystring to get the $$H$$ using

just one expression, without using any functions, and explain your

answer.

$6.(15)$ Write a function that will prompt the user separately for a

filename and extension and will create and return a string with the

form $$filename$.$ext$.$