What is “?” used for??

Question

I can’t find why “?” is used in operators

Answer 1

? Used in to use if inside an expression
For example
x += x>50 ? -25 : 25
It means decrease x by 25 if x more than 50. But increase by 25 if not.

Answer 2

What language ?

Answer 3

Then put swift in question's tags

Answer 4

https://code.sololearn.com/cwE9SAGl7ZbJ/?ref=app

Answer 5

swift

Answer 6

Thanks