Conversion (fahrenheit to celsius)

According to me the code written is correct and the output to sample input matches completely to sample output. But not even a single test cases passes. Please tell me where i am going wrong.
link to my code- https://ide.codingblocks.com/s/45387

Hey Aditi, Can you please send the link to question because your code passes all test cases under this question https://hack.codingblocks.com/contests/c/55/180

https://hack.codingblocks.com/contests/c/537/180
I am doing contest C++ fall 2018

Hey Aditi, both the test cases are passing… your code is correct check your submissions for this problem it must be showing correct answer.

Aditi yr code is fine if not working than remove the whole comment above the code and then submit(only code).

Yes, thank you for your help. There must be some problem with the site, but the test cases are passing now.