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Top Forums Programming How to get the sizeof char pointer Post 302322322 by fpmurphy on Wednesday 3rd of June 2009 10:49:09 AM
Old 06-03-2009
Quote:
which is terminated by a null byte by convention.
To clarify, from ISO C99 Sect 7.1.1, a string is a "contiguous sequence of characters terminated by and including the first null character".

Quote:
your two calls to sizeof will always return 4 (size of a pointer).
This is only true if you are on a platform whose programming model is such that a pointer is 32 bits. One such common programming model is ILP32 (Microsoft Windows, 32-bit Linux) where the size of an integer, long and pointer are all 32 bits. Another common programming model is LP64 (64-bit Linux) where the size of an integer is 32 bits but the size of a long and a pointer is 64 bits.
 

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LESSECHO(1)						      General Commands Manual						       LESSECHO(1)

NAME
lessecho - expand metacharacters SYNOPSIS
lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ... DESCRIPTION
lessecho is a program that simply echos its arguments on standard output. But any metacharacter in the output is preceded by an "escape" character, which by default is a backslash. OPTIONS
A summary of options is included below. -ex Specifies "x", rather than backslash, to be the escape char for metachars. If x is "-", no escape char is used and arguments con- taining metachars are surrounded by quotes instead. -ox Specifies "x", rather than double-quote, to be the open quote character, which is used if the -e- option is specified. -cx Specifies "x" to be the close quote character. -pn Specifies "n" to be the open quote character, as an integer. -dn Specifies "n" to be the close quote character, as an integer. -mx Specifies "x" to be a metachar. By default, no characters are considered metachars. -nn Specifies "n" to be a metachar, as an integer. -fn Specifies "n" to be the escape char for metachars, as an integer. -a Specifies that all arguments are to be quoted. The default is that only arguments containing metacharacters are quoted SEE ALSO
less(1) AUTHOR
This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others). Send bug reports or comments to bug-less@gnu.org. Version 458: 04 Apr 2013 LESSECHO(1)
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