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Re: How to access the value that a pointer is pointing to
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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: Paul Lynch <email@hidden>
  • Date: Sat, 29 Apr 2006 19:07:02 +0100


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.

OB-patronising link: http://www.amazon.co.uk/exec/obidos/ASIN/ 0131103628/qid=1146333932/sr=8-1/ref=sr_8_xs_ap_i1_xgl/ 026-7300173-7550055

Paul
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  • Follow-Ups:
    • Re: How to access the value that a pointer is pointing to
      • From: Phil Faber <email@hidden>
References: 
 >-[NSAttributedString initWithData:...] compresses spaces? (From: Glen Simmons <email@hidden>)
 >How to access the value that a pointer is pointing to (From: Phil Faber <email@hidden>)
 >Re: How to access the value that a pointer is pointing to (From: Patrick Seemann <email@hidden>)
 >Re: How to access the value that a pointer is pointing to (From: Phil Faber <email@hidden>)

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