Simple Python Calculator

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This exercise is to practise mathematical operations and conditionals.

Write some code to ask a user for a number, then an operator, then another number. Depending on the user’s input, we want to perform the calculation and provide the answer (rounded to 3 decimal places).

Solution:

num1 = float(input("Enter the 1st number: "))
operator = input("Enter an operator (+ - * /): ")
num2 = float(input("Enter the 2nd number: "))

if operator == "+":
    print(num1 + num2)
elif operator == "-":
    print(num2 - num1)
elif operator == "*":
    print(num1 * num2)
elif operator == "/":
    print(round(num1 / num2, 3))
else:
    print(f"{operator} is not a valid operator")

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