Admittedly, I’m (somewhat) young, inexperienced, and a bit of a smartass… But isn’t the concept of pass-by-reference strictly C++?
I’m fairly certain that you can only pass by-value in C. And while you can dereference pointers, there is no syntax for references.
Take the example on p71. When you pass &integerPointer to modf, you’re actually passing by-value the address of the pointer. The function signature of modf probably looks something like…
The function [i]modf[/i] would then receive a copy (which is wholly owns) of *returnedInt, dereference the pointer and update that value at that address.
The concept of pass-by-reference would be something like…
…where the second argument would actually be a reference to a value stored in the stack frame of the calling function.
Sure, the actual value of integerPart is still stored in main()'s stack frame… but it’s a different concept for updating that value.
Anyway, I just was looking for clarification/discussion … I’m actually about 120 pages into this book, and honestly, I love it! It’s one of the few guide books that I’ve found to be readable. Thanks!