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simple_calculator.py
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# Define functions for each operation
def add(x, y):
return x + y
def subtract(x, y):
return x - y
def multiply(x, y):
return x * y
def divide(x, y):
# Prevent division by zero
if y == 0:
return "Error: Division by zero is not allowed"
return x / y
# Display the options to the user
def display_menu():
print("\nSelect operation:")
print("1. Add")
print("2. Subtract")
print("3. Multiply")
print("4. Divide")
# Main program loop
while True:
display_menu()
# Take input from the user
choice = input("Enter choice (1/2/3/4): ")
# Check if the choice is valid
if choice in ('1', '2', '3', '4'):
try:
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))
except ValueError:
print("Invalid input. Please enter numeric values.")
continue
# Perform the chosen operation
if choice == '1':
print(f"{num1} + {num2} = {add(num1, num2)}")
elif choice == '2':
print(f"{num1} - {num2} = {subtract(num1, num2)}")
elif choice == '3':
print(f"{num1} * {num2} = {multiply(num1, num2)}")
elif choice == '4':
print(f"{num1} / {num2} = {divide(num1, num2)}")
# Check if the user wants another calculation
next_calculation = input("Do you want to perform another calculation? (yes/no): ").lower()
if next_calculation != 'yes':
print("Exiting the calculator.")
break
else:
print("Invalid input. Please select a valid operation.")