On 1 January 2016 at 15:04, user user wrote: > Hi ! help please > if((result=f())==0) > is Undefined behavior ? This question is not appropriate on this mailing list, because it's not about GCC. Please find somewhere more appropriate for general C programming questions, such as http://stackoverflow.com In general, no, it's not undefined behaviour (why would it be?). However if f() modifies result (e.g. because it's a global variable) then it is undefined.
