All Questions
183 questions
6votes
3answers
333views
Implementation of arrays that store their size
In this code I implemented arrays that store their own size before the first element. To access it you need to go back exactly sizeof(size_t) bytes back. To free it,...
- 165
7votes
3answers
990views
Dynamic Arrays with Count / Capacity in C
I write in C for several projects (e.g. learning / teaching, coding competitions, data processing) and frequently need arrays (e.g. strings) with fast appending / concatenation / reversing. I've ...
- 2,437
3votes
2answers
145views
Todo List app using C
I just learned to deal with pointers and memory allocation stuff. Using that, I built a todo list app, and it works as far as I tested it. I didn't account for many user errors, so any suggestion to ...
2votes
2answers
135views
Generic Dynamic Array Implementation
I wrote a dynamic array implementation in ISO C11 using void pointers. Everything I've implemented works--at least in all my tests--on a 64-bit machine. It has some vague type-checking and resizes ...
- 75
6votes
4answers
1kviews
Automate character search in C
THE TASK We are dealing with a string of symbols and need quick responses to queries of the following types: What is the position of the k-th occurrence of symbol X in the string? Reading from ...
- 121
2votes
2answers
283views
Optimizing Subarray Removal: Can the Removal Process be Enhanced for Better Efficiency?
The only requirement is that it has to be done by pointers: And it returns the amount of removed numbers because of the way of output that is set in the main. The function, using exclusively pointer ...
- 41
6votes
1answer
61views
Chessboard configuartions with no possible capture on the next move
THE TASK: Given an NxM "chess"board and Q,R,B,K where Q is the number of queens, R the number of rooks, B the number of bishops, and K the number of knights find out how many possible ...
- 121
4votes
2answers
2kviews
Linked list and array list performance comparison in C
After watching Stroustrup's presentation on performance comparison between vectors and linked lists (https://youtu.be/YQs6IC-vgmo?si=9r5wXqnwkmN29xqn), I've decided it would be a good problem to get a ...
6votes
3answers
647views
3votes
3answers
1kviews
Small code exercise with 3D arrays in C
I wrote a small program that initializes a 3D array in C based on command-line arguments and prints it. I did my best to avoid undefined behavior and memory errors. I wrote comments as if I had an ...
- 509
1vote
2answers
266views
Count the number of mismatches between two arrays
This function may compute the amount of unequal elements of two char-arrays of the length n: ...
5votes
1answer
992views
Dynamic array type using void pointers C
I made my own dynamic array type using void pointers. I'd like to know what you think of my implementation. void pointers are nice but I fear they may be inefficient. The compiler cannot tell what ...
- 175
8votes
4answers
522views
Array List C implementation
I want to show you my implementation of the array list in C. Is there something I can improve or fix? Header ...
- 531
6votes
2answers
195views
First attempt at making a sobel edge detection filter in c
I made a borders filter in C. It works properly, but I think it could be optimized and better designed; the formatting is abysmal. It uses too many lines for the border cases and has too many ...
- 63
3votes
1answer
134views
C generic typesafe dynamic array (vector) try 2
The previous generic dynamic array I asked a review for here was written using only the preprocessor and so while the array itself was type-safe, all the manipulating macros where not. In this try I ...
- 189
