Difference between memcpy and strncpy

[pavunkumar]

Dear Friends

Can you explain the difference between memcpy and
strncpy function
Actually , please classify function by usage

Thanks

[Xavier Roche]

pavunkumar a �crit :

> Can you explain the difference between memcpy and
> strncpy function

strncpy copies "at most" n bytes, ending at the first \0 seen in the source.

Personal note: strncpy() is one of the cursed functions in C most people
will (should) never use, as it may lead to unterminated destination.

<http://opengroup.org/onlinepubs/007908775/xsh/strncpy.html>
<http://www.opengroup.org/onlinepubs/009695399/functions/memcpy.html>

[Casper H.S. Dik]

Xavier Roche <xro...@free.fr.NOSPAM.invalid> writes:

>pavunkumar a �crit :
>> Can you explain the difference between memcpy and
>> strncpy function

>strncpy copies "at most" n bytes, ending at the first \0 seen in the source.

And zero fills the rest!

It's only useful for copy strings to C structs, specifically when those
structs are then written to a file.

Casper
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