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

Another difference is that function return types and parameter types did not need to be defined. They would be assumed to be ints.

f(x)
{
    return x + 1;
}

and

int f(x)
int x;
{
    return x + 1;
}

are identical.