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by: Christian Seberino |
last post by:
I wrote some C functions and successfully imported them into Python.
All is apparently well but there is one question about the object returned
by the C function that is bugging me...
Take for example this last line of a C extension:
return Py_BuildValue("s", my_string);
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by: Jim H |
last post by:
In one of my functions I create a char string s, of dynamic allocated
length.
I want to free the memory before my function returns. Everywhere I find
says free(s) is the way to do this, but I'm not so sure. How can the
language
know how much space to free? It looks to me as if this would just free the
first
char in the string, since an array is a pointer to it's first element.
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by: zerro |
last post by:
Hello,
I try to understand heap overflows (under Linux), but can not understand
one
thing with freeing memory allocated with malloc(). Here it comes:
I have a program called 1.c:
main() {
char *a, *b, *c, *d, *e;
a = malloc(8);
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by: Kurt |
last post by:
Hi all,
I know there's been a lot of articles and posts because of this malloc
and free combination and I've read quite a lot of them. Still I can't
get my program to work:
My Structure:
typedef struct rule {
char ip;
struct rule *next;
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by: boris |
last post by:
Hi!
I'm seeking some answers about what seems to be a memory leak.
I have a loop that looks much like this:
double *largeArray = (double*) calloc();
for (...) {
printf("iteration #...\n");
for (...) {
double *foo = (double*) calloc();
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by: Walter Roberson |
last post by:
If realloc() finds it necessary to move the memory block, then
does it free() the previously allocated block?
The C89 standard has some reference to undefined behaviour if one
realloc()'s memory that was freed by realloc(), but the only way
explicitly mentioned in the C89 standard to free memory via realloc()
is to realloc() it down to 0 bytes.
I had always assumed it would automatically free the previous memory,
but is the behaviour...
|
by: santosh |
last post by:
Hi all,
In the following program I allocate a block of pointers to type char,
initialised to zero. I then point each of those pointers to a block of
allocated memory of fixed size (33 bytes). A unique 'string' is then
generated using itoa() and rand() for each block of memory.
Finally using pointer-to-pointer of type char, I print the contents of
the blocks of memory, i.e. the strings, using both printf() and
manually, character by...
|
by: a.zeevi |
last post by:
free() multiple allocation error in C
====================================
Hi!
I have written a program in C on PC with Windows 2000 in a Visual C
environment.
I have an error in freeing multiple allocation as follows:
1. I allocated an array of pointer.
2. I Read line by line from a text file.
3. I allocated memory for the read line.
|
by: Reddy |
last post by:
Hello,
Can someone clarify this?
char *p = (char *) malloc (100*sizeof(char));
p=p+50;
free(p);
Does free clear all the 100 bytes of memory or only 50 as it is
pointing to 51st byte of memory now?
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by: Chad |
last post by:
Excercise 6-5
Write a functon undef that will remove a name and defintion from the
table maintained by lookup and install.
Code:
unsigned hash(char *s);
void undef(char *s)
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
| |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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