🔒 why is the sum not 10.3

[dim saddle]

@stuck plover

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[rapid heart]

did you mean 20.3 in the title?

[stuck plover]

yes

[rapid heart]

the reason is due to how computers represent numbers; some decimal numbers can only be approximated if you only have a finite number of digits

so when you add 2 of those together, the errors add up to form what you see

!e a popular example is

print(0.1 + 0.2)

[dim saddle]

:white_check_mark: Your 3.12 eval job has completed with return code 0.

0.30000000000000004

[golden rampart]

See also: https://stackoverflow.com/questions/588004/is-floating-point-math-broken

[stuck plover]

thanks.

[unkempt island]

Wait wat 😳

[rustic rain]

You can fix this py doing

print("Addition Calculator")

a = float(input("Enter the first number: "))
b = float(input("Enter the second number: "))

print(round(a + b, 1))

welcome

[stuck plover]

Deleted the screenshot coz it was showing some personal info, thanks for all the help
Now I understand that computers cannot convert certain things to binary accurately

[dim saddle]

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