This Python program displays a four-option menu:
1. Calculate one
2. Calculate two
3. Calculate three
4. Exit
If the user selects option 1, the program performs a specific calculation and displays the result.
def calculate_one():
# Example: compute a simple expression
x = float(input("Enter value for x: "))
result = (x ** 2 + 3 * x + 1) / (x + 1)
print(f"Result of calculation one: {result:.4f}")
def show_menu():
print("1. Calculate one")
print("2. Calculate two")
print("3. Calculate three")
print("4. Exit")
def main():
while True:
show_menu()
choice = input("SELECT (1 to 4): ")
if choice == "1":
calculate_one()
elif choice == "2":
print("Calculation two not implemented yet.")
elif choice == "3":
print("Calculation three not implemented yet.")
elif choice == "4":
print("Exiting program.")
break
else:
print("Invalid choice. Please enter a number from 1 to 4.")
main()
1. Calculate one
2. Calculate two
3. Calculate three
4. Exit
SELECT (1 to 4): 1
Enter value for x: 2
Result of calculation one: 3.6667