Re: How to access the value that a pointer is pointing to
Re: How to access the value that a pointer is pointing to
- Subject: Re: How to access the value that a pointer is pointing to
- From: Phil Faber <email@hidden>
- Date: Sat, 29 Apr 2006 20:29:45 +0100
On 29 Apr 2006, at 19:07, Paul Lynch wrote:
On 29 Apr 2006, at 18:24, Phil Faber wrote:
But oneByte has a value of 2067035792! Which is why I assumed it
was a pointer. I was expecting an 8-bit byte number from 0 to
255; 65, for example, being the ASCII value for 'A'.
int oneByte, oneByteASCII;
int isn't one byte, and assumes signed. Default integer in gcc is
probably 4 bytes, and short is 2. fread is putting the byte into
the top byte of your 4 byte int, which may impact the sign bit; the
effect may also depend on the endianness of the system you are
running it on.
Make oneByte and oneByteASCII char and it will do what you want.
Well, so far.
..but how can I then access the ASCII value of that character? I
specifically need that value. In BASIC I would have done something
like:
num=ASC(string$)
Re endianness, I'm running PowerPC at the moment. (Only just learned
what endianness meant a few days back at the Xcode workshop in London!)
I hate being a newbie!
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