Category "c"

Errors about scanf and printf expected types

My issue is coming from the %c name input, I am getting an error that it is expecting type char * but has type char * [15] for the scanf function. I am also ge

Makefile with arbitrarily many mains. How to compile all mains with one command?

I am still newish to makefile patterns. I have been working on a project based on a template makefile and project structure, however I have a good sense of what

How to represent sparse matrix (including zero elements) in C using linked list?

I want a code that represents a sparse matrix including zero elements using linked list, I basically want the output to be like this: 1 0 0 0 0 6 1 0

Encrypting a video file with the 3DES algorithm

I am encrypting a video file using 3DES algorithm and ffmpeg library.In my program, I use two channels, each connected to its own instance of FFmpeg. Basically,

fread a float array after a fwrite immediately will cause a file offset problem

Initial the integer array[] right line 21 will cause the failure of the data[] array fread from data.txt . int main() { FILE * file0 = NULL;

Why is my print function giving the wrong output in my program to print strings?

The expected outcome is for example: a word a sentence This is the outcome tho: aword word a sentence Here's the code: #include <stdlib.h> #include <

Why Segmentation Fault for this below code? [duplicate]

This following code gives Segmentation fault: #include <stdio.h> int main() { char* str = "hello world"; str[0] = 'H'; // it is

initialization of 'const char **' from incompatible pointer type 'char *'

I am new in learning C. I have an issue in returning double star pointer from the function. This is my code. #include <stdio.h> #include <stdbool.h>

Are "thread storage duration" and "thread local storage duration" the synonyms?

C11, 6.2.4 Storage durations of objects, 4 (emphasis added): An object whose identifier is declared with the storage-class specifier _Thread_local has thread s

Is this defining the struct pointer address?

I am a bit lost in the following piece of code. What does it mean? Define the the Elf pointer start position? #define ELFHDR ((struct Elf *) 0x10000) Aft

Unexpected output when printing to 0xb8000 - osdev

I'm developing a kernel and when I try to print to video memory(0xb8000) I get weird characters when I run it. What I have tried: I have tried to find some answ

Remove an element from array of structs with pointers

I have to implement the appointmentData_remove function which removes an element of type tAppointment from the tAppointmentData array. Data types are defined li

Getting a stack overflow exception when declaring a large array

The following code is generating a stack overflow error for me int main(int argc, char* argv[]) { int sieve[2000000]; return 0; } How do I get around

Eclipse throwing "Unresolved inclusion error" on standard includes like "stdio.h"

After installing Eclipse freshly on Windows 10, I imported code to work on, but Eclipse started throwing the error "Unresolved inclusion error" on standard libr

Compile all C files in all of the children directories

So, I'm making a game with raylib and I need to compile all the .c files at once. The files are in separate folder inside the 1st one(Like "MainFolder/PlayerFil

Called function work at printf but not at arithmetic statement

I made a struct Triangle and I made a function to calculate p(perimeter/2). When I call the function inside printf it works. But when I call the same function a

I can't get an application to run on Windows startup ASM (Registry)

I am trying to translate a code made in C into assembly (FASM) but I can't get it to work. The code tries to create an entry in the registry so that when the ma

How to use unpacked data msgpack-c

I know how to unpack data but don't know how to use specific data from array or map, Here's the code : #include <msgpack.h> #include <stdio.h> int

Using cblas_dgemm in C and returning the product matrix in python

I am fairly new to parallel computing and we have been assigned to implement a matrix algorithm in C for later use in python. The problem comes when my function

How to link a objective-c library into a c/c++ project

I have this code: for the objective-c library GNUmakefile include $(GNUSTEP_MAKEFILES)/common.make LIBRARY_NAME = libteste libteste_OBJC_FILES = ./src/teste.m