def main():
    print("Welcome to the Simple Math Calculator!")
    print("Please choose an operation: +, -, *, /")

    # Get operation from the user
    operation = input("Enter operation: ")
    
    # Get two numbers from the user
    try:
        num1 = float(input("Enter the first number: "))
        num2 = float(input("Enter the second number: "))
    except ValueError:
        print("Invalid input! Please enter numeric values.")
        return

    # Perform the selected operation
    if operation == '+':
        result = num1 + num2
    elif operation == '-':
        result = num1 - num2
    elif operation == '*':
        result = num1 * num2
    elif operation == '/':
        if num2 == 0:
            print("Error: Division by zero is not allowed!")
            return
        result = num1 / num2
    else:
        print("Invalid operation! Please choose +, -, *, or /.")
        return

    # Display the result
    print(f"The result of {num1} {operation} {num2} is: {result}")

# Call the main function
if __name__ == "__main__":
    main()