BASH : got to the upper imbricated case - bash

Question

It is my first question, so I hope that I'm clear enough
I have the following problem with a case inside a case.
the first one is a menu which trigger a function. inside the function there a an other case. In case user select NO, he should come back to the first case.
I have not found how to do that beside of launching the first script ( containing the first case:
menu.sh:
source ./functions.sh
#read answer
while read answer;do
case $answer in
1)
function1
;;
2)
function2
;;
3)
# the same, without function
read -p "do you want to continue [y/n] ?" choice
case $choice in
y|Y)
# DO SOME STUFF
menu.sh
;;
n|N )
./menu.sh
;;
*)
echo "invalid input"
./menu.sh
;;
esac
4)
function4
;;
5)
quit
;;
esac
done
functions.sh:
function1() {
read -p "do you want to continue [y/n] ?" choice
case $choice in
y|Y)
# DO SOME STUFF and go back to menu
echo "hello"
menu.sh
;;
n|N )
./menu.sh
;;
*)
echo "invalid input"
./menu.sh
;;
esac
}
so as you can see, when the function is launched, it launched the second case where the user is asked if he wants to continue. If he choose no, he can go back the menu. But with the way i m doing, i m spawning a menu.sh inside the case.
What is the better solution?
Thank you in advance for your help

Answer 1

As your code layed out, you don't need to run anything to go back to the menu. Just delete the lines in which you are spawning the menu.sh.
An example function1 would look like:
function1() {
read -p "do you want to continue [y/n] ?" choice
case $choice in
y|Y)
# DO SOME STUFF and go back to menu
echo "hello"
;;
n|N )
;;
*)
echo "invalid input"
;;
esac
}
And change
while read answer;do
To
while read -p "Enter a number: " answer;do
It will make it easier to understand how things are working.