It's not listed as cdecl and (therefore?) not findable in the index, but in chapter 5 - Pointers and Arrays - the book presents the programs dcl and undcl that

It's not listed as cdecl and (therefore?) not findable in the index, but in chapter 5 - Pointers and Arrays - the book presents the programs dcl and undcl that translate between C declarations and English renderings of them. I believe dcl mimics the cdecl program.