Tuesday, October 4 # its useless but its a start

``````birth_year = input("Enter your birth year: ")
age = 2022 - int(birth_year)
needed_age = 20
required_years = 21 - int(age)
return x + y

def subtract(x, y):
return x - y

def multiply(x, y):
return x * y

def divide(x, y):
return x / y
if age < 20:
print("Access denied. You are " + str(age) + ", the required age is: 21 please try again in " + str(required_years) + " years.")
elif age > 20:
print("Welcome " + "your are " + str(age) + " years old, the required age is 21 Have a good"
" rest of your "
"day!")
print("Select operation.")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")

while True:
choice = input("Enter choice(0/1/2/3/4): ")

if choice in ('0', '1', '2', '3', '4'):
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))

if choice == '1':
print(num1, "+", num2, "=", add(num1, num2))

elif choice == '2':
print(num1, "-", num2, "=", subtract(num1, num2))

elif choice == '3':
print(num1, "*", num2, "=", multiply(num1, num2))

elif choice == '4':
print(num1, "/", num2, "=", divide(num1, num2))

next_calculation = input("Next calculation? (yes/no): ")
if next_calculation == "no":
break

else:
print("Invalid Input"``````