dibbit

Maybe, but it will catch bugs like this if the test is written for it, and anyone writing C in the 21st century professionally, with safety in mind, is a) writing tests, and b) getting 100% coverage.

It made sense when portability from C to C++ was important, as in now and for as long as both languages have constancy.

Run the code and see for yourself, parent fixed it.

It does matter. sizeof is computed at compile time, it is not computed at runtime. something() is a runtime invocation .. sizeof() 'looks' like that, but isn't.

There actually is a good reason not to use parens with sizeof, and it is in fact a means of introducing subtle bugs to your code if you don't know the difference:

    sizeof some_struct; //computed at *compile* time
    sizeof(some_struct); // also computed at *compile* time, but looks like its a runtime call