Objective-C: Returning int to BOOL method

Question

I am new to Objective-C and i wonder why this method compiles, can anyone explain me why?

Thank you

-(BOOL) isEnabled{
   return 56;
}

Answer 1

A BOOL in Objective-C is a typedef of signed char. Since 56 fits in that type, the implicit conversion from a literal int results in no data loss.