What are the major differences between ANSI C and K&R C?

Question

The Wikipedia article on ANSI C says:

One of the aims of the ANSI C standardization process was to produce a superset of K&R C (the first publishe

Answer 1

There are some minor differences, but I think later editions of K&R are for ANSI C, so there's no real difference anymore.
"C Classic" for lack of a better terms had a slightly different way of defining functions, i.e.

int f( p, q, r )  
int p, float q, double r;  
{  
    // Code goes here  
}

I believe the other difference was function prototypes. Prototypes didn't have to - in fact they couldn't - take a list of arguments or types. In ANSI C they do.