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 without a specific reason.
405,560
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K&R recommends the use of int when reading character using getchar()? [duplicate]
The problem is distinguishing the end of the input from valid data. The
solution is that getchar returns a distinctive value when there is no more input,
a value that cannot be confused with any real ...
-1
votes
1
answer
15
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Populating two arrays from a CSV file with each row containing two words separated by a semicolon
How could I fix my code that populates two separate arrays from a CSV file that contains words separated by semicolons in C?
My CSV file looks something like this:
to meet/encounter;begegnen
to care ...
- 1
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21
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Problem With Adding SFML 2.6.1 To Dev C++ (Linker Error)
I'm trying to add SFML 2.6.1 to Dev C++ (I use Windows 7). I added lib and include to Libraries and C++ Includes in Compiler Options; and added "-lsfml-graphics -lsfml-window -lsfml-system" ...
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1
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57
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Weird timings when measuring the perfomance of binary search [closed]
Okay, so what is happening here puzzled me for 2 days. Basically, as an activity I was measuring how much time some algorthim takes to execute in its worse, average, and best cases. Until now, I got ...
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Question about the address change in dynamic array unexceptionally [closed]
Basically, the program manages storage placed in memory. Each chunk has a header including all the details about the chunk, including size and the next chunk. I create a struct header to store all ...
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18
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Broken pipe error with Ports between Elixir and C [closed]
I am attempting to write a program in Elixir that connects to a C program via Port and erl_interface. I got the C code up and running and managed to send data through the port as well as decode and ...
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4
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57
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How does 'long double' occupy 16 bytes / 128 bits of storage when my CPU (X64 ISA)?
I'm a novice C programmer; this might be a naive question to ask but please bear with me. I learnt that the storage size of char, short, int, long, long long, float, double, and long double are ...
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2
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Is it possible to define a macro that checks if a value falls within value range for any given sequential enum?
Given an enum which is assigned sequentially (i.e. the first value is 0 and the last value is the number of enumerations - 1), we can check if a value is a valid enum value like so:
enum e {FOO, BAR, ...
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2
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67
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How can i make a C program exit when key Q is pressed?
i am making a counting program, and i want to add a feature that quits the program, but i don't really know how to do it. i have seen examples on how to do it, but all of them are for windows. please ...
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1
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46
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Why does printing cause the heap break to increase by this much?
I wrote the following program,
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include "rand.h"
int main (int argc, char* argv[]) {
...
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Does the EVP_KEY created by OSSL_DECODER_CTX_new_for_pkey need to be manually freed?
Does this code (ignoring lack of error handling) leak with OpenSSL 3.0?
EVP_PKEY *pkey = NULL;
BIO *public_key_file = BIO_new_file("public.pem", "r");
OSSL_DECODER_CTX *dctx = ...
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1
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0
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Clang error: libdnk.a, libunwind.a and libc++.a linkage issues in windows build
I am trying to build an ELF file using the ARM-M4 toolchain version 8.1.0. My C code files compile successfully, but I encounter the following error while linking the object files
[100%] Linking C ...
- 1,174
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3
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64
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Read is blocked by getc
For the following code:
#include <unistd.h>
#include <stdio.h>
int main()
{
char buf[6];
printf("%c\n", (char)getc(stdin));
int ret = read(STDIN_FILENO, buf, 5);
...
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2
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1
answer
31
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LNK2019 unresolved external symbol in function defined in static library
I am trying to compile a driver through the use of cl.exe on Windows 10. It is written in pure C. I am using the Enterprise Windows Driver Kit to provide source files and compiling for X86. I ...
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1
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In C language, do multiple implicit conversions that occur in an expression have a certain order? [closed]
(My question might be quite long. I would be very grateful if you could read it through.)
I am learning C language by reading the C11 standard. I find that there are quite a lot of implicit ...
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