Re: technology discussion → does the world need a "new" C ?

On 16/08/2024 18:56, Keith Thompson wrote:

David Brown <david.brown@hesbynett.no> writes:
[...]

In C++, you can't pass arrays as parameters at all - the language
inherited C's handling of arrays.  You can, of course, pass objects of
std::array<> type by value or by reference, just like any other class
types.

 #include <cassert>
 typedef int array42[42];
 void func(array42& param) {
     assert(sizeof param == 42 * sizeof(int));
}
 int main() {
     array42 arg = { };
     func(arg);
}

This works in C too. You don't need by-reference parameters, but you do need to switch sizeof to work directly on the type:
  #include <assert.h>
  typedef int array42[42];
  void func(array42 param) {
      assert(sizeof(array42) == 42 * sizeof(int));
  }
  int main() {
      array42 arg = {0};
      func(arg);
  }