Why are declarations put between func() and {}?

Question

In sed source I saw often

func(...)
int b;
char c;

{
...
}

Why put variables there? Does it change the scope?

Like here: http://ww

Answer 1

This is K&R (old) style, it works, but..

Answer 2

That's just old style, pre-ANSI C. The whole notion of function declarations with type parameters wasn't introduced until later!

Answer 3

That's just the old (K&R) way of declaring parameters in C.

/* Old way of declaring parameters*/
void myFunc(a, b)
  int a; int b;
{
    ...
}

Nobody does it that way anymore, unless you need to compile your code on a really old compiler - so either sed was written with old compilers in mind, or that code is really old.