I don't understand if there is a problem with code ?

Question

https://code.sololearn.com/cTM6Zmr7gcL9/?ref=app

Answer 1

You forgot a couple of ampersands. Line 9 should be
scanf("%f %f", &a, &b);

Also, in future, please tag the language of your code in the post: C in this case. That would help you (and others) get the answer faster.

Answer 2

Not a problem at all! 😊

Answer 3

Thankyou I was careless