How to add error result to calculator in Python?

Question

I followed the steps on how to make a calculator on the app, but now I want to add an "Error" result when a result goes past a certain number, like 100. Anyone know how to code that in? Thanks!

Answer 1

Can you please share the calculator's code so I can modify it? I might end up making something else otherwise 😅

Answer 2

Instead of the quotes, in the if statement, try enclosing the result in float(). John Boland

Answer 3

Here is the code:

while True:
print("Options:")
print("Enter 'add' to add two numbers")
print("Enter 'subtract' to subtract two numbers")
print("Enter 'multiply' to multiply two numbers")
print("Enter 'divide' to divide two numbers")
print("Enter 'quit' to end the program")
user_input = input(": ")

if user_input == "quit":
break
elif user_input == "add":
num1 = float(input("Enter a number: "))
num2 = float(input("Enter another number: "))
result = str(num1 + num2)
print("The answer is " + result)
if "result" > 100:
print("Error")
elif user_input == "subtract":
num1 = float(input("Enter a number: "))
num2 = float(input("Enter another number: "))
result = str(num1 - num2)
print("The answer is " + result)
elif user_input == "multiply":
num1 = float(input("Enter a number: "))
num2 = float(input("Enter another number: "))
result = str(num1 * num2)
print("The answer is " + result)
elif user_input == "divide":
num1 = float(input("Enter a number: "))
num2 = float(input("Enter another number: "))
result = str(num1 / num2)
print("The answer is " + result)
else:
print("Unknown Input")

I tried adding an error section after the 'add' section, but I seemed to have miswrote the code

Answer 4

Thank you, that helps a lot.

I also found another way thanks to a friend of mine who took a CS class in school. Instead of if float(result), you can do if(num1 + num2) and that works as well.

Answer 5

Well that works well but since you stored the result in another variable, it would be better to use that variable instead.

Answer 6

That makes sense. Thank you.