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pointer math

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future

Joined: 14 May 2004
Posts: 330

pointer math
Posted: Wed May 16, 2007 10:20 am

If I have a pointer to an array of a 4 byte struct and declare a pointer to the first struct and keep incrementing it, how should I deal with the pointer going further than the last struct? Maybe if( ++pointer == &struct[number of structs] ) pointer--; ? Right now it is just a ++pointer, so it is dangerous.

kender

Joined: 09 Aug 2004
Posts: 768
Location: Silicon Valley

Re: pointer math

Posted: Wed May 16, 2007 6:49 pm

Reply with quote

future wrote:

If I have a pointer to an array of a 4 byte struct and declare a pointer to the first struct and keep incrementing it, how should I deal with the pointer going further than the last struct?

Maybe if( ++pointer == &struct[number of structs] ) pointer--; ?

Right now it is just a ++pointer, so it is dangerous.

For us to make a useful suggestion, you have too post the whole loop that reads the array.
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