Re: on allowing "int a" definition everywhere

On 22/08/2024 07:00, Bart wrote:

I assume the (...) tests the value of 'f'? If so then perhaps this is a shorter way of expressing the same thing:
      {
         FILE * f = fopen("file.txt", "r");
         if (f) {
             /* … */
             fclose(f);
         }
     }
     fwrite(f, …);

Yes, this is the equivalent code.
C++ allows two forms. One with explicit check and another one with implicit check.
  if (FILE* f = fopen("file.txt", "r"); f) /*f is checked explicitly*/
  {
      /*...*/
      fclose(f);
  }
  if (FILE* f = fopen("file.txt", "r"))  /*f is checked implicitly*/
  {
      /*...*/
      fclose(f);
  }
I also have considered for cake to have a extra part that is "defer" part.
if (FILE* f = fopen("file.txt", "r"); f; fclose(f))
{
}
But if 'defer' were added to C2Y, we could then do the following:
if (FILE* f = fopen("file.txt", "r"); f; )
{
   defer fclose(f);
   /*...*/
}
Sometimes, too much syntactic sugar is not good because it creates too many variants.