Path: utzoo!attcan!uunet!mcvax!ukc!reading!minster!alistair
From: alistair@minster.york.ac.uk
Newsgroups: comp.lang.c
Subject: Re: Clarification needed on Pointers/Arrays
Message-ID: <604751079.17985@minster.york.ac.uk>
Date: 1 Mar 89 10:24:39 GMT
References: <1436@etive.ed.ac.uk>
Reply-To: alistair@SoftEng.UUCP (alistair)
Organization: Department of Computer Science, University of York, England
Lines: 17

a is an array of pointers - not chars, in other words:
a is a pointer to a pointer
*a is a pointer
**a is a char

so passing it to foo1 and 'pretending' it is a pointer to a char does not
work.  So, b is not pointing to an array of chars, but an array of pointers,
but when the compiler encounters b+i it increments b to the next
byte address - somewhere in the middle of a pointer.

Also, what you really intended to print out was *(b + i), b + i is an
address - which is why you happened to get control codes printed - but
incremented by one each time.

In foo2 b is an address - the base address of an array of pointers.  On
your implementation (but see other discussions about sizes of pointers
in this topic) a char address is the same size as an array address -