2014/1/14-2/5 [Computer/SW/Languages/C_Cplusplus] UID:54763 Activity:nil | 1/14 Why is NULL defined to be "0" in C++ instead of "((void *) 0)" like in
C? I have some overloaded functtions where one takes an integer
parameter and the other a pointer parameter. When I call it with
"NULL", the compiler matches it with the integer version instead of
the pointer version which is a problem. Other funny effect is that
sizeof(NULL) is different from sizeof(myPtr). Thanks.
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2011/3/7-4/20 [Computer/SW/Languages/C_Cplusplus] UID:54056 Activity:nil | 3/7 I have a C question. I have the following source code in two identical
files t.c and t.cpp:
#include <stdlib.h>
int main(int argc, char *argv[]) {
const char * const * p1;
const char * * p2;
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2009/7/21-24 [Computer/SW/Languages/Java] UID:53168 Activity:moderate | 7/20 For those who care btw, it looks like eclipse is now A Standard Tool
at UCB ugrad cs, probably replaced emacs. Furthermore, people get
angry at seeing Makefiles, (since eclispe takes care of that). I
guess it's just a sign of the times.
\_ The more people at my work use eclipse the less the code is
managable in emacs. I'm not sure which application's fault
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2005/2/15-16 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Compilers] UID:36174 Activity:moderate | 2/15 Technical question: we have a memory leak in our C code, we think,
but it's not the sort of memory leak where the memory's unreferenced.
What we'd like to do is sort of a poor-man's profile, we want
to know who calls our memory allocator "New"... Sorta like a stack
trace. Using an actual profiler is sort of difficult 'cause it's
a parallel application. Thanks, --peterm
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2004/9/23 [Computer/SW/Languages/C_Cplusplus] UID:33716 Activity:high | 9/23 Is the a C++ equivelent to the C realloc function?
\_ realloc(). But seriously, maybe you want an STL container
that automatically grows.
\_ Not in this case. I just need to grow a char array
automatically myself. (For speed reasons) Really, It's a
very isolated place in the code, and I'll probably just end
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2004/8/10-11 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Compilers] UID:32805 Activity:high | 8/10 C question. Is there anything wrong with the following?
const my_struct_t **pp;
pp = malloc(sizeof(my_struct_t *));
pp = realloc(pp, sizeof (my_struct_t *) * 2);
"gcc -Wall" doesn't complain. But the M$ compiler (cl.exe) complains
about the realloc line:
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2004/4/13-14 [Computer/SW/Languages/C_Cplusplus] UID:13175 Activity:high | 4/13 How much C++/C knowledge do recent Berkeley CS/EECS grad have?
\_ Class CSGrad inherits FromDaddy and does not implement C++Knowledge
very well.
\_ funny. just the rich and poor as always. the middle class can't
afford education.
\_ They know how to deal with pointers and addresses, malloc and free.
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2003/1/18-19 [Computer/SW/Languages/C_Cplusplus] UID:27139 Activity:very high | 1/17 If I have "foo_bar_baz_struct_t *p, *q;", which of the following
is better?
1. p = malloc(sizeof (foo_bar_baz_struct_t));
memcpy(q, p, sizeof (foo_bar_baz_struct_t));
2. p = malloc(sizeof *p);
memcpy(q, p, sizeof *p);
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2001/2/27 [Computer/HW/Memory, Computer/SW/Languages/C_Cplusplus] UID:20713 Activity:high | 2/26 Hey folks, I'm looking for something like Purify but cheap.
What do people do for C programming to guard against memory
bashing and leaks, other than write their own malloc and
buy expensive software from Rational?
\_ wasn't there some kind of program to analyze C code for
no no's. I think it was called something like lint.
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2001/1/25-26 [Computer/SW/Languages/C_Cplusplus] UID:20431 Activity:high | 1/25 C question. I want to declare a variable p which stores the pointer to
a malloc'ed array of 65536 elements. Each of these 65536 elements
in turn stores the pointer to a malloc'ed array or 16 int's. What's
the best way to declare p to include as much type information as
possible? Sure I can do "int ***p;", but that doesn't contain much
type information. Thanks.
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2000/2/11-13 [Computer/SW/Languages/C_Cplusplus] UID:17485 Activity:very high | 2/10 I get an impression that new grads coming out of berkeley don't
have much exposure to C. I mean pure C, not C++. How do most
people feel about this? I guess I'm asking alumni who are hiring
and also current students.
\_ I've spent the last year doing project in only C or Java, no C++.
\_ they don't necessarily have much exposure to C++ either...
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1999/8/18-20 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Compilers] UID:16336 Activity:nil | 8/19 C question: I rarely, if ever, remember to include stdlib.h, which
includes malloc, atoi, etc. But I use these functions on a regular
basis. I haven't encountered a problem until I tried using atof(...)
also in stdlib.h. Once I included stdlib.h, my problems went away.
So why didn't I have problems with the other functions?
\_ your compiler was assuming that undefined functions returned an int.
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