How to Tie submenus to Main Menu

[navarro1]

This is the script for the main menu:
$ MainMenu
echo " Please choose from the above options : \c"
read option
case $option in
[Dd] ) echo "You have chosen to Display student" ;;
[Aa] ) echo "You have chosen to Add a student" ;;
[Ee] ) echo "You have chosen to Edit a student" ;;
[Ss] ) echo "You have chosen to Sort a student" ;;
[Hh] ) echo "You have chosen Help" ;;
[Xx] ) echo "You have chosen to Exit" ;;

esac

If the user choose e for edit I would like the screen display the Edit Menu on the screen like this:

You have chosen to Edit\delete a student:
1)Edit Student
2)Delete Student
3)Help
4)Exit to Main Menu
Enter Selection >

Do I write a script for the edit menu and then insert below
[Ee] ) echo "You have chosen to Edit a student"
clear
while true
do
edit.text
or someting like this to have the second level of menu options run?

 

[Salem]

Just make each menu / submenu a separate function

#!/bin/sh

# the edit function and it's menu
function edit_menu {
  echo "1)Edit Student"
  echo "2)Delete Student"
  echo "3)Help"
  echo "4)Exit to Main Menu"
  echo -e "Enter Selection > \c"
}

function sub_edit {
  while true ; do
    edit_menu
    read option
    case $option in
      [1] ) echo "You have chosen to Edit student" ;;
      [2] ) echo "You have chosen to Delete student" ;;
      [3] ) echo "You have chosen Help" ;;
      [4] ) echo "You have chosen to Exit"
            break ;;
    esac 
  done
}

# the main function and it's menu
function main_menu {
  echo "D - Display" 
  echo "A - Add"
  echo "E - Edit"
  echo "S - Sort"
  echo "H - Help"
  echo "X - Exit"
  echo -e " Please choose from the above options : \c"
}

function main {
  while true ; do
    main_menu
    read option
    case $option in
      [Dd] ) echo "You have chosen to Display student" ;;
      [Aa] ) echo "You have chosen to Add a student" ;;
      [Ee] ) echo "You have chosen to Edit a student"
             sub_edit ;;
      [Ss] ) echo "You have chosen to Sort a student" ;;
      [Hh] ) echo "You have chosen Help" ;;
      [Xx] ) echo "You have chosen to Exit"
             break ;;
    esac 
  done
}

# go do it all
main