Linked Questions
26 questions linked to/from Opaque C structs: various ways to declare them
0
votes
1
answer
265
views
how to make a static struct from typedef [duplicate]
I have a header file list.h and a source file list.c,which define the functions in list.h.
I have a struct here:
typedef struct ListNode{
struct ListNode* next;
struct ListNode* prev;
void *...
- 164
361
votes
11
answers
147k
views
What does a type followed by _t (underscore-t) represent?
This seems like a simple question, but I can't find it with the Stack Overflow search or Google. What does a type followed by a _t mean? Such as
int_t anInt;
I see it a lot in C code meant to deal ...
- 14.6k
190
votes
24
answers
161k
views
Error handling in C code
What do you consider "best practice" when it comes to error handling errors in a consistent way in a C library.
There are two ways I've been thinking of:
Always return error code. A typical function ...
- 11.3k
96
votes
15
answers
51k
views
Is it a good idea to typedef pointers?
I looked through some code and noticed that the convention was to turn pointer types like
SomeStruct*
into
typedef SomeStruct* pSomeStruct;
Is there any merit to this?
- 46.7k
113
votes
16
answers
41k
views
Valid use of goto for error management in C?
This question is actually a result of an interesting discussion at programming.reddit.com a while ago. It basically boils down to the following code:
int foo(int bar)
{
int return_value = 0;
...
- 273k
82
votes
13
answers
58k
views
How can I simulate OO-style polymorphism in C?
Is there a way to write OO-like code in the C programming language?
See also:
Can you write object-oriented code in C?
Object-orientation in C
Found by searching on "[c] oo".
- 11.1k
39
votes
16
answers
24k
views
Run C or C++ file as a script
So this is probably a long shot, but is there any way to run a C or C++ file as a script? I tried:
#!/usr/bin/gcc main.c -o main; ./main
int main(){ return 0; }
But it says:
./main.c:1:2: error: ...
- 54.2k
106
votes
3
answers
57k
views
What is an opaque pointer in C?
May I know the usage and logic behind the opaque pointer concept in C?
- 4,848
42
votes
5
answers
24k
views
8
votes
3
answers
2k
views
Does the ISO 9899 standard has reserved any use of the _t suffix for identifiers?
I can read in many books and an other SO questions that the standard may expand the set of identifiers such as size_t or int32_t, so it reserves any use of the _t suffix for identifiers.
Is that ...
- 28.9k
4
votes
8
answers
576
views
Typedefing pointer types
I've been reading around SO and have come across the following questions which touch on why typedefing pointer types is bad.
Opaque C structs: how should they be declared?
and
Const-correctness and ...
- 19.8k
5
votes
3
answers
1k
views
Providing helper functions when rolling out own structures
if I am developing a C shared library and I have my own structs. To make common operations on these struct instances easier for library consumers, can I provide function pointers to such functions ...
- 999
3
votes
2
answers
3k
views
Best way to read from a sensor that doesn't have interrupt pin and requires some time before the measurement is ready
I'm trying to interface a pressure sensor (MS5803-14BA) with my board (NUCLEO-STM32L073RZ).
According to the datasheet (page 3), the pressure sensor requires some milliseconds before the measurement ...
- 606
7
votes
3
answers
557
views
Const-correctness and immutable allocated objects
During a recent discussion (see comments to this answer), R.. recommended to never create aliases for pointer-to-const types as you won't be able to deallocate the referenced objects easily in a ...
- 169k
2
votes
2
answers
3k
views
Header Files not including correctly
I have the following two header files:
player.h
#ifndef _PLAYER_H_
#define _PLAYER_H_
#include "map.h"
typedef struct{
char* name;
int x;
int y;
int keyMapping;
char symbol;
}...
- 3,874