What is diff b/w malloc,calloc,r ealloc
could any one explain
6  10689 
malloc returns uninitialized memory, calloc initializes the memory to
all bits zero, and realloc is way more flexible than it should be.
realloc can act like malloc or free, or it can resize memory returned
by malloc, calloc, or a previous realloc call, possibly allocating a
new block and invalidating any pointers into the memory.
no*@given.out wrote: On Wed, 23 Mar 2005 14:41:10 +0100, "Ramasubramania n XR (AS/EAB)"
<ra************ **************@ ericsson.com> wrote:
What is diff b/w malloc,calloc,r ealloc
could any one explain
Pointer = calloc(NumBlock s, BlockSize) ...
Clears and allocates the given number of blocks of a given size. (most
useful for arrays)
Be careful, though: "clears" means "fills with 0-valued bytes", not
necessarily "fills with zero values". In particular, 0x00000000 need not
be the representation of a zero-valued floating point number or of a
null pointer.
Richard
"Ramasubramania n XR (AS/EAB)" wrote:
What is diff b/w malloc,calloc,r ealloc
could any one explain
See the last two references below.
--
Some useful references:
<http://www.ungerhu.com/jxh/clc.welcome.txt >
<http://www.eskimo.com/~scs/C-faq/top.html>
<http://benpfaff.org/writings/clc/off-topic.html>
<http://anubis.dkuug.dk/jtc1/sc22/wg14/www/docs/n869/> (C99)
<http://www.dinkumware. com/refxc.html> C-library
Ramasubramanian XR (AS/EAB) wrote: What is diff b/w malloc,calloc,r ealloc
could any one explain
What book are you using that doesn't cover such fundamental memory
management functions?
Brian
Ramasubramanian XR (AS/EAB) wrote on 23/03/05 : What is diff b/w malloc,calloc,r ealloc
could any one explain
It's all explained in any decent C book or help file.
google : "man malloc" "man realloc" "man calloc"
--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html
I once asked an expert COBOL programmer, how to
declare local variables in COBOL, the reply was:
"what is a local variable?"
Ramasubramanian XR (AS/EAB) wrote: What is diff b/w malloc,calloc,r ealloc
could any one explain
Why don't you read the manual or man pages like the rest of us did? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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