import os
cls = lambda: os.system('cls' if os.name in ('nt', 'dos') else 'clear')
while True:
cls()
print("\nWybierz program.")
print("1.Dodawanie")
print("2.Odejmowanie")
print("3.Mnożenie")
print("4.Dzielenie")
choice = input("Wpisz numer: ")
cls()
if choice not in ['1', '2', '3', '4']:
print("Nie ma takiego programu, wybierz jeszcze raz")
else:
num1 = int(input("Pierwsza liczba: "))
num2 = int(input("Druga liczba: "))
if choice == '1':
operator = "+"; calculation = num1 + num2
elif choice == '2':
operator = "-"; calculation = num1 - num2
elif choice == '3':
operator = "*"; calculation = num1 * num2
elif choice == '4':
operator = "/"; calculation = num1 / num2
print(num1, operator, num2, "=", calculation)
question = input("Kontynuować? y / n: ")
if question.lower() == 'n':
print('Zamykam...')
exit()
