Borrar todo

Parte de la sección Fundamentos del Journey de Ruby de Coddy — lección 84 de 88.

Desafío

Fácil

Amplía tu rastreador de gastos añadiendo la funcionalidad "Clear All".

Tu programa debe:

Inicializar un array vacío llamado expenses
Crear un loop do que muestre el menú y lea la entrada del usuario
Cuando el usuario introduzca "1", solicitar el nombre y el monto del gasto, crear un hash con las llaves :name y :amount, añadirlo al array expenses e imprimir Expense added!
Cuando el usuario introduzca "2", mostrar todos los gastos o un mensaje si no existe ninguno
Cuando el usuario introduzca "3", calcular y mostrar el total y el promedio de todos los gastos, o un mensaje si no existe ninguno
Cuando el usuario introduzca "4", eliminar todos los gastos del array e imprimir un mensaje de confirmación
Cuando el usuario introduzca "5", imprimir Goodbye! y salir del bucle

El menú debe mostrarse exactamente como antes:


--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option:

Cuando se seleccione la opción "4", utiliza el método clear en el array de gastos e imprime: All expenses cleared!

Por ejemplo, si las entradas son 1, Coffee, 5.0, 4, 2, y luego 5 (añadir un gasto, borrar todo, luego ver), la salida debería ser:


--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Expense name: Amount: Expense added!

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: All expenses cleared!

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: No expenses recorded yet.

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Goodbye!

Si las entradas son 1, Lunch, 12.0, 1, Dinner, 25.0, 3, 4, 3, y luego 5 (añadir dos gastos, verificar el total, borrar, verificar el total de nuevo), la salida debería ser:


--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Expense name: Amount: Expense added!

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Expense name: Amount: Expense added!

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Total: $37.0
Average: $18.5

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: All expenses cleared!

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: No expenses to calculate.

--- Expense Tracker ---
1. Add Expense
2. View Expenses
3. Total & Average
4. Clear All
5. Exit
Choose an option: Goodbye!

Pruébalo tú mismo

expenses = []


loop do
  puts "--- Expense Tracker ---"
  puts "1. Add Expense"
  puts "2. View Expenses"
  puts "3. Total & Average"
  puts "4. Clear All"
  puts "5. Exit"
  print "Choose an option: "
  
  choice = gets.chomp
  
  if choice == "1"
    print "Expense name: "
    name = gets.chomp
    print "Amount: "
    amount = gets.chomp.to_f
    expense = { name: name, amount: amount }
    expenses << expense
    puts "Expense added!"
  elsif choice == "2"
    if expenses.empty?
      puts "No expenses recorded."
    else
      expenses.each do |expense|
        puts "#{expense[:name]}: $#{expense[:amount]}"
      end
    end
  elsif choice == "3"
    if expenses.empty?
      puts "No expenses to calculate."
    else
      total = 0
      expenses.each do |expense|
        total += expense[:amount]
      end
      average = total / expenses.length
      puts "Total: $#{total}"
      puts "Average: $#{average}"
    end
  elsif choice == "5"
    puts "Goodbye!"
    break
  end
  
  puts ""
end