Question

Below is the snippet of code that keeps giving me the problem. Could someone explain to me why my code isn’t working.

# Shell Version of Login Menu

Administrator ()
{
    clear
    ./Administrator.sh
}

# ------ Student User Menu ------
Student_Menu()
{
    clear
    ./studentMenu.sh
}

# ------ Borrow Menu ------
Borrow_Menu()
{
    clear
    ./BorrowBookMenu.sh
}

# ============================================
# ------ Main Menu Function Definition -------
# ============================================

menu()
{
echo ""
echo "1. Administrator"
echo ""
echo "2. Student user"
echo ""
echo "3. Guest"
echo ""
echo "4. Exit"
echo ""
echo "Enter Choice: "
read userChoice

if ["$userChoice" == "1"]
then 
    Administrator
fi

if ["$userChoice" == "2"]
then
    Student_Menu
fi


if ["$userChoice" == "3"]
then
    Borrow_Menu
fi

if ["$userChoice" == "4"]
then
    echo "GOODBYE"
    sleep
    exit 0
fi

echo
echo ...Invalid Choice...
echo 
sleep
clear
menu
}

# Call to Main Menu Function
menu

Answer 1

do your menu like this

# Shell Version of Login Menu

Administrator ()
{
#     clear
    ./Administrator.sh
}

# ------ Student User Menu ------
Student_Menu()
{
#     clear
    ./studentMenu.sh
}

# ------ Borrow Menu ------
Borrow_Menu()
{
#     clear
    ./BorrowBookMenu.sh
}

# ============================================
# ------ Main Menu Function Definition -------
# ============================================

menu()
{
    while true
    do
        echo ""
        echo "1. Administrator"
        echo ""
        echo "2. Student user"
        echo ""
        echo "3. Guest"
        echo ""
        echo "4. Exit"
        echo ""
        echo "Enter Choice: "
        read userChoice
        case "$userChoice" in
            "1") Administrator ;;
            "2") Student_Menu ;;
            "3") Borrow_Menu ;;
            "4") echo "bye" ;exit ;;
             *) echo "Invalid";;
        esac
    done
}

menu