Guys..the substract function is not working..saying no output..wats the mattr

Question

https://code.sololearn.com/chaosap0gkeo/?ref=app

Answer 1

You should place your inputs for num_1 and num_2 before the first condition checker (if ...)
Because when your elif substract case is reached, no number has been defined.

Answer 2

To make it easier with your input, you can use '+' and '-' instead of writing 'add' and 'substract', and you can ask for only one line of input and then use split():

n1,op,n2 = input().split() # getting input
n1,n2 = map(float,[n1,n2]) # turning n1 and n2 to floats
if op == '+' :
print (n1 + n2)
elif op =='-' :
print (n1 - n2)

input needs to be separated by white spaces then, as in:
"27 - 13"
or
"33 + 8"

Answer 3

Choe
😂😂😂 right!
I just tried to keep some learning material here.

Answer 4

You don't need to difine them twice, it's better to define your numbers once, but before starting your conditions.

Answer 5

i checked it with 2 digits, works fine.

Answer 6

Are you sure you entered your input on multiline ?
this way:
substract
35
12

Answer 7

And, as i said, you should declare num_1 and 2 once only ...

Answer 8

Hey, don't give up !
Your code is working, you just need to be very precise with the way you write your input.

Answer 9

Another detail:
you don't need to turn your results to strings before printing.
print (num_1 - num_2)
will work

Answer 10

Ok, now your input should be like this:
"42
13
substract"
the order of your input counts.

Answer 11

did you write it on 3 lines, exactly like this ? because it should work, it works for me.
Also: you don't need str(input())
because input() is already a string

Answer 12

You're checking if the user_input equals " substract" (note the space). You need to remove the space

Answer 13

Y Åđ Û Cépagrave
Works fine for me. (add & sub)

Answer 14

What Cépagrave said... Didn't notice it 🤓

Answer 15

Cépagrave but do that and its the same as stripping down to eval() input.

Answer 16

Is it okay now #Anna ?

Answer 17

So Cépagrave i should be defining num1 and num2 twice??

Answer 18

But guys..its working now

.but i cant do calculations with 2 digits

Answer 19

Idk...now i cant substract showing no output..

Answer 20

Yeahhh..