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Top Forums Programming CHAR Array - stuffed with values - with more size than it holds Post 302167537 by jim mcnamara on Thursday 14th of February 2008 05:31:45 PM
Old 02-14-2008
*I understood from the beginning. I said they are not truly contiguous in memory.
Why? they are 20 chars long. 20 % 8 == 4 There are 4 bytes between them. Very probably.

The first position in memory after str1 (str1["21"] which does not really exist) is very likely NOT str2[0].

Why only very likely NOT true?

How things are positioned in memory is implementation dependent. So I cannot guarantee where str1 and str2 live in memory because you may be running a non-standard compiler or running in a special unix environment.

In the environments I do know they will not be back-to-front in memory. There will be a gap. Why don't you just modify my code and see?
 

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streqvcmp(3)							Programmer's Manual						      streqvcmp(3)

NAME
streqvcmp - compare two strings with an equivalence mapping SYNOPSIS
#include <your-opts.h> cc [...] -o outfile infile.c -lopts [...] int streqvcmp(char const* str1, char const* str2); DESCRIPTION
Using a character mapping, two strings are compared for "equivalence". Each input character is mapped to a comparison character and the mapped-to characters are compared for the two NUL terminated input strings. This function name is mapped to option_streqvcmp so as to not conflict with the POSIX name space. str1 first string str2 second string RETURN VALUE
the difference between two differing characters ERRORS
none checked. Caller responsible for seg faults. SEE ALSO
The info documentation for the -lopts library. ao_string_tokenize(3), configFileLoad(3), optionFileLoad(3), optionFindNextValue(3), optionFindValue(3), optionFree(3), optionGetValue(3), optionLoadLine(3), optionNextValue(3), optionOnlyUsage(3), optionProcess(3), optionRestore(3), optionSaveFile(3), optionSaveState(3), optionUnloadNested(3), optionVersion(3), pathfind(3), strequate(3), streqvmap(3), strneqvcmp(3), strtransform(3), 2010-07-05 streqvcmp(3)
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