Print is an Invalid Syntax?

Question

I keep getting an error for print being an invalid syntax and I am unsure what is wrong. Anyone know what I am doing wrong?

Here is the program code:
elif user_input == "quadform":
num1 = float(input("Enter A value: "))
num2 = float(input("Enter B value: "))
num3 = float(input("Enter C value: "))
result = str(-num2 + sqrt(pow(num2, 2) - 4 * num1 * num3)/(num1 * 2)
print("The answer is: " + result)

Answer 1

I entered

prgms
quadform
1
-2
-15
quit

And it worked fine! Gave me 5, which is one of the two correct answers. What did you try?

Answer 2

Yes 😂
That's where we're supposed to enter all the inputs, in separate lines, like I showed in my examples.

Answer 3

Starting a code with "elif" would certainly throw a syntax error. If this is not your full code, please save it in Code Playground and share a link here. Thanks.

Answer 4

Here's the full code Kishalaya Saha
https://code.sololearn.com/cWDOeEN07DQ8/?ref=app

Answer 5

Oh, you have missmatched parentheses in line 61. It should be

str(-num2 + sqrt(pow(num2, 2) - 4 * num1 * num3)/(num1 * 2))

Answer 6

Thank you! However, now I have an error on line 9.

Answer 7

Oh, that's probably because Sololearn's Python doesn't support dynamic input-output interaction. All non-web codes here take all the inputs at the beginning and only *then* run it in their server and show us the output. But on a real interpreter the code should work fine. Here, I tested it with the following input (all entered together), and the code didn't give me any error:

add
2
3
subtract
2
3
multiply
2
3
divide
2
3
quit

Does that make sense? Please let me know :)

Answer 8

Everything but sqrt and quadform in prgms works fine. I can't do import math because that causes an error. I'm using Python's IDLE shell to test all of this.

Also, thank you so much for your help so far. I really appreciate it.

Answer 9

For sqrt, you just forgot to use str() on the result. Should be str(num**0.5). For quadform, we can do it by importing the math module, but it isn't necessary. Try this:

str((-num2 + (num2**2 - 4*num1*num3)**0.5)/(2*num1))

I used the parentheses the correct way, and replaced the pow and the sqrt functions by just **2 and **0.5. In Python, those are more convenient 😉 Of course, this would only give you only one of the roots of the quadratic equation.

Answer 10

The sqrt function works now, but quadform still doesn't work. The second parentheses at the very end is an invalid syntax, but without it, there is a type error

Answer 11

Could you kindly update the code with what I suggested so I can see? I tried, and didn't get a syntax error.

Answer 12

Updated: https://code.sololearn.com/cWDOeEN07DQ8/?ref=app

Answer 13

Does a box pop up that says, "Seems like your program requires input"?

Answer 14

Ok, now it's working. Thank you so much, Kishalaya!

Answer 15

Happy to help! Have fun coding 😊