Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged c
0
votes
1.6k
views
1
answer
c - Writing to a closed, local TCP socket not failing
I seem to be having a problem with my sockets. Below, you will see some code which forks a server and a client. ... ); } } return 0; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - how to exit a child process - _exit() vs. exit
Consider this code snippet: pid_t cpid = fork(); if (cpid == -1) { perror("fork"); exit(EXIT_FAILURE); } if ( ... Shall I use exit() or _exit()? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - Anonymous functions using GCC statement expressions
This question isn't terribly specific; it's really for my own C enrichment and I hope others can find it ... this screw up static analyzers? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - What is the difference between using _exit() & exit() in a conventional Linux fork-exec?
I've been trying to figure out how the fork-exec mechanism is used inside Linux. Everything was going on ... .. Thanks for any clarification. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.9k
views
1
answer
c - Why are malloc() and printf() said as non-reentrant?
In UNIX systems we know malloc() is a non-reentrant function (system call). Why is that? Similarly ... prevents them being guaranteed reentrant? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.5k
views
1
answer
c - Returning function pointer type
Often I find the need to write functions which return function pointers. Whenever I do, the basic format I use ... seem redundant in the code. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - segfault only when NOT using debugger
I have a multithreaded C program, which consistently generates a segmentation fault at a specific point in the program ... to find the problem! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.9k
views
1
answer
c - Check glibc version for a particular gcc compiler
I have two gcc compilers installed on my system, one is gcc 4.1.2 (default) and the other is gcc 4.4.4. ... 2, since it is the default compiler. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - atol() v/s. strtol()
What is the difference between atol() & strtol()? According to their man pages, they seem to have the same ... , which function should I use? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - Want to compile native Android binary I can run in terminal on the phone
I've been trying for a couple days to compile a native ARM Android binary that will execute on my phone using a ... to the libc on the phone. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - How to determine if memory is aligned?
I am new to optimizing code with SSE/SSE2 instructions and until now I have not gotten very far. To my knowledge ... ). Thank you in advance... See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - Mmap() an entire large file
I am trying to "mmap" a binary file (~ 8Gb) using the following code (test.c). #include <stdio.h> #include ... . What is wrong with my code? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - fcntl, lockf, which is better to use for file locking?
Looking for information regarding the advantages and disadvantages of both fcntl and lockf for file locking. ... enforcing mutual exclusion. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - Literal string initializer for a character array
In the following rules for the case when array decays to pointer: An lvalue [see question 2.5] of type array ... "? Some example please. Thanks! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.4k
views
1
answer
c preprocessor - C/C++ macro/template blackmagic to generate unique name
Macros are fine. Templates are fine. Pretty much whatever it works is fine. The example is OpenGL; but the ... at end of block? Thanks! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.8k
views
1
answer
c - How to append strings using sprintf?
I am facing a serious issue with sprintf. Suppose my code snippet is: sprintf(Buffer,"Hello World"); sprintf(Buffer ... to see all the lines. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.9k
views
1
answer
c - faster alternative to memcpy?
I have a function that is doing memcpy, but it's taking up an enormous amount of cycles. Is there a faster ... to move a piece of memory? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.3k
views
1
answer
c - Given an audio stream, find when a door slams (sound pressure level calculation?)
Not unlike a clap detector ("Clap on! clap clap Clap off! clap clap Clap on, clap off, the Clapper! clap ... CFAR certainly fits the bill. -Adam See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - What is the format specifier for unsigned short int?
I have the following program #include <stdio.h> int main(void) { unsigned short int length = 10; printf(" ... it was still giving the warning. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - Why prefer start + (end - start) / 2 over (start + end) / 2 when calculating the middle of an array?
I've seen programmers use the formula mid = start + (end - start) / 2 instead of using the simpler formula mid ... do they use the former one? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - Difference between r+ and w+ in fopen()
In fopen("myfile", "r+") what is the difference between the "r+" and "w+" open mode? I read this: "r" ... "w+", the file will be erased first? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - GDB: Listing all mapped memory regions for a crashed process
I've got a full-heap core dump from a dead process on an x86 Linux machine (kernel 2.6.35-22 if it matters) ... proc seem to do what I need. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.7k
views
1
answer
c - How to make backtrace()/backtrace_symbols() print the function names?
The Linux specific backtrace() and backtrace_symbols() allows you to produce a call trace of the program. However, it ... foo(); return 0; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
2.4k
views
1
answer
c - How to solve "ptrace operation not permitted" when trying to attach GDB to a process?
I'm trying to attach a program with gdb but it returns: Attaching to process 29139 Could not attach to process. ... I attach it to debuggers? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.5k
views
1
answer
c - Why won't extern link to a static variable?
Why does extern int n not compile when n is declared (in a different file) static int n, but works when ... what about extern am I missing? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - Correctness of Sakamoto's algorithm to find the day of week
I am using Sakamoto's algorithm to find out the day of week from a given date. Can anybody tell me the correctness of this ... m-1] + d) % 7; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.8k
views
1
answer
c - Where can one find the C89/C90 standards in PDF format?
I'm looking for a free copy version of the C89/C90 standard, but I can't find it anywhere! Why is so ... helped either, nor did Open Standards. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
1.6k
views
1
answer
c - What are the differences between poll and select?
I am referring to the POSIX standard select and poll system C API calls. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
To see more, click for the
full list of questions
or
popular tags
.
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] 目前我从php转go语言,想直接选择最好的go语言orm框架,哪个最好?
[2] vue-cli4.0引入elementui报错?
[3] 小程序包超了 如何把这个文件从utils文件夹中移出去?
[4] 求助:急, el-checkbox-group 这个组件如何获取每次新增的数组?
[5] javascript - How to get response from a GET method google maps API?
[6] javascript - Google Closure Compiler with advanced optimization for multiple scripts
[7] spring boot的状态机StateMachine有啥用?
[8] InfluxDB中的Fields不会被索引是什么意思?
[9] windows.open() 什么情况下是下载文件? 什么情况下是预览文件/视频?
[10] css - Align child elements of different blocks
2.1m
questions
2.1m
answers
60
comments
56.8k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...