Questions tagged [c]
C is a general-purpose programming language used for system programming (OS and embedded), libraries, games and cross-platform. This tag should be used with general questions concerning the C language, as defined in the ISO 9899 standard (the latest version, 9899:2018, unless otherwise specified — also tag version-specific requests with c89, c99, c11, etc). C is distinct from C++ and it should not be combined with the C++ tag absent a rational reason.
347,710
questions
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1answer
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C program works fine when compiled in windows but behaving unexpectedly in linux
I wrote a simple program to calculate simple interest for my CS class but it's behaving unexpectedly when I compile it in linux as shown below:
The program:
#include<stdio.h>
int main() {
//...
0
votes
1answer
11 views
Executing a makefile command from meson?
I wanted to try to execute 'make install' command from a makefile automatically with meson.
I tried the following in a meson.build file:
r = run_command('make install')
if r.returncode() != 0
...
0
votes
3answers
30 views
Display the element appearing at even and odd subscript position separately in an array element in C programming
The question is:
Write a program that will read an array of integers. The program should display the elements appearing at even and odd subscript position separately.
This is program from the book but ...
0
votes
0answers
9 views
Asp.Net Framework MVC 5 - How to prevent the entire View from being reloaded when uploading files
Before click
After Click
I'm trying to update only in Modal (Bootstrap) with the list of files I just uploaded. I am returning a partial view in Json.
The problem is that
the entire View is reloaded ...
0
votes
0answers
13 views
[netbeans 12.1][templates][c header] — errors when creating new file based on this template
/*
* File: ${name}.${extension}
* Author: ${user}
*
* Créé le ${date}, ${time}
*
*/
#ifndef ${GUARD_NAME}
#define ${GUARD_NAME}
// *********************************************************...
0
votes
1answer
22 views
Rewrite file at certain system time daily in C
How to automate/schedule file operations(rewrite/delete whole content in file) daily at a certain system time (0000 hours / 12.00 a.m.)?
0
votes
0answers
18 views
Semaphore and mutex loop
I have two functions that I use semaphore and mutex for a variant of classic the sleeping barber problem. But when I run the program, the program never ends.
Function 1: the actions of TA (barber for ...
0
votes
2answers
40 views
Error: assignment to expression with array type, when assigning values to an array
I would like to insert value into the array's last position. So, I created the function insert. This function returns the new array.
In this code, I would like to insert value=0 into array={1}'s last ...
0
votes
2answers
47 views
Manipulation of Strings inside a function
I've been stuck at this for a while.
Let there be an array of strings declared by user:
#define LENGTH 3
int main()
{
char* hohoho[3]={"string1","string2","string3"};
...
0
votes
1answer
19 views
How do I assign an u_int32_t IPv4 address to the address parameter of sockaddr_in in C? (Socket Programming in C)
I've managed to get the broadcast address as a u_int32_t, and my goal is to assign the broadcast address to the saddr.sin_addr.s_addr parameter so I can turn it into a string with inet_ntoa():
struct ...
0
votes
0answers
46 views
Having a hard time editting a file in C
I am trying to write some code that is supposed to add kernel parameters in the file /etc/default/grub inside this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet pci=noaer resume=UUID=57661f93-9206-48ba-...
0
votes
0answers
10 views
libnl: rtnl_link_change - operation not supported
I'm trying to use libnl for a project, but I'm having issues with calls to rtnl_link_change, as it always returns a non-zero code that describes that the operation is not supported.
For example, here ...
1
vote
2answers
68 views
scanf_s is not included in C11
I'm using Dev-C++ 5.11 and using compiler options to compile to C11. I'm having trouble using the scanf_s function. I've tried <stdio.h> as well as <stdlib.h>.
Is there anything in the ...
0
votes
0answers
20 views
Arduino project- PIR sensor movement [closed]
My project is a covid safety detector using a PIR sensor and an ultrasonic sensor in Arduino. This is what I do: First, when the PIR sensor detects a human(HIGH), it will send off a signal to the ...
0
votes
1answer
29 views
How to write a function that takes a line o text, and saves each word in a pointer to pointer to char and returns that pointer
I am trying to write a function that is given a string of text (which is to be a shell command) and now I just need to extract words, so delete spaces and save each word in a pointer to pointer to ...
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