Questions tagged [pset5]
The problem set for Week 5 will challenge you to apply what you've learned about pointers, memory management, file i/o and structs, creating more complex data structures (such as Hash Tables or Tries) and leveraging their power to write a lightning-fast spell check algorithm.
1,230
questions
0
votes
2
answers
13
views
Speller returning 'a' or 'A' as misspelled 500+ times
I successfully managed to make the code compile and removed all segmentation faults, but now it returns the problem as described in the title. I assume the problem is in load, as it appears to not be ...
- 1
0
votes
1
answer
36
views
PS5 - Back to the Bank - check50 - expected exit code 0, not 1
For PS5 - Back to the Bank, the unit test script works when I run it on code50, however, when I run the check50 I am getting expected exit code 0, not 1. If anyone has a suggestion, I would greatly ...
0
votes
1
answer
23
views
speller seg fault
I have been on this for literal days, there is always a seg fault no matter what i do
things i have tried:
debug 50: MULTIPLE TIMES, i fix the errors i find but end up with another one soon after, ...
- 5
0
votes
1
answer
15
views
I write all the function but the actual misspelled words are much greater than the expected misspelled value, not working well with substrings
// Implements a dictionary's functionality
#include <ctype.h>
#include <stdbool.h>
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <string.h>
...
- 3
0
votes
1
answer
25
views
PSet5 - Dictionary loading only one word
I've been banging my head for the last few hours as to why my dictionary function only saves one word from the whole dictionary. Even though debug50 and printf shows different hashes for different ...
0
votes
1
answer
30
views
Speller - My code keeps failing and I have no idea why
Running my dictionary.c code against the sample text with ./speller texts/lalaland.txt shows that I have the same number of misspelled words as the staff's solution, but for some reason I only have 1 ...
0
votes
1
answer
25
views
PSET 5 Speller - can't make load function work
I can't pass load stage and I can't check other functions as I can't seem to load the words to the hash table. I tried to see where is the issue and found out fscanf function(?) doesn't seem like ...
- 3
0
votes
1
answer
36
views
CS50 pset5 Speller: double free or corruption (fasttop) Aborted/ free(): double free detected in tcache 2
I get "double free or corruption (fasttop)\n Aborted" when I run my code. Somehow, only small dictionary can handle up to around 50 words perfectly but sometimes it can only handle 10 words; ...
0
votes
0
answers
16
views
PSET 5 speller memory won't be freed despite using free()
It seems that my program, though it compiles and begins to run, seg faults due to a memory leak acording to valgrind:
==4602== HEAP SUMMARY:
==4602== in use at exit: 4,007,248 bytes in 71,558 ...
- 1
0
votes
1
answer
23
views
Speller: Valgrind Still Reachable Error
after scouring the internet for multiple solutions to my Valgrind issue I cannot seem to find any that is specific to my code. I've spent hours coding this and Check50 gave me the green light except ...
1
vote
1
answer
27
views
Problems with Speller: Unable to Load Dictionary
Whenever I try to run my speller program, it says that it is unable to load the dictionaries (both small and large). Even when I try using someone else's code on the internet, which is supposed to be ...
- 11
0
votes
1
answer
47
views
Speller segmentation fault
'''// Implements a dictionary's functionality
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "dictionary....
0
votes
0
answers
14
views
lab5 memory leakage - Why is the function not working even using calloc?
Tried many iterations and even changed the allocation to calloc() that i read it frees memory used by NULL or undefined data and still get the same error.
in create_family(int_generations)
// TODO: ...
0
votes
0
answers
18
views
Timed Out in Check50 Pset5/Speller
Please help, have Checked and debugged the program and couldn't find the issue. Have moved the debug to only include individual functions and checked again but still couldn't find the issue. The ...
0
votes
0
answers
36
views
Speller: Load function only reads 9 words to memory
I finished coding all functions for the pset5. However, all my tests result in the same output:
Words in Dictionary: 9
It does not matter which texts I am running. But, I cannot find my fault in the ...
- 5
0
votes
0
answers
180
views
Why it shows "free(): double free detected in tcache 2" in speller?
I am working on pset5 and speller assignment. Here is my code:
// Implements a dictionary's functionality
#include <stdbool.h>
#include <string.h>
#include <strings.h>
#include &...
0
votes
1
answer
16
views
Clang error when compiling (Pset 5)
I tried googling this but I couldn't find (or understand) much. I'm receiving the following error when I go to make dictionary:
Here is my code for the load portion:
- 3
0
votes
1
answer
37
views
Pset 5 speller: segmentation fault for large dictionary
I can't figure out what I am doing wrong, have gone through many questions and walkthroughs of this problem and it still looks like it should be correct. It obviously is not! With a small and medium ...
- 5
0
votes
1
answer
34
views
I just can't figure out how to put the word into lowercase for the hash function to provide the same index
bool check(const char *word)
{
char mot2[46];
for (int o = 0, h = strlen(word); o < h + 1; o++)
{
mot2[o] = tolower(word[o]);
}
int y = hash(word);
node *cursor = table[y];
while (cursor != ...
0
votes
1
answer
16
views
pset 5 Speller - Mispelled Words Issues
Running the program, a large portion of text is incorrectly flagged as mis-spelled. I've reviewed & changed the hash / check / load functions but I end up with the same issue. Can someone point me ...
0
votes
1
answer
26
views
I have no idea why my speller in pset5 is giving the wrong amount of misspelled words
I am not sure where my mistake is, I keep getting too many misspelled words.
This is the link to check 50 I run on the code:
https://submit.cs50.io/check50/ce552ed87b7d99ac966d9ba7a897bda34bf0a794
// ...
- 7
0
votes
1
answer
41
views
Program is free of memory errors, valgrind tests failed - pset5 speller
I'm am getting this error - program is free of memory errors, valgrind tests failed; see log for more information.
I have tried so many things but I keep getting more errors. Here is my code:
// ...
- 1
0
votes
0
answers
17
views
Pset5 - Segmentation Fault (solved)
SOLVED. Hi all: Could I please get some help interpreting Valgrind's output for pset5? Disclaimer: I think my code (far bottom of post) itself is wrong, but want to fix the segmentation fault first.
...
0
votes
1
answer
64
views
Pset5 speller load
I am having an issue with my load function in pset5 speller, I really can't tell what's going on. I've gone back and rewatched the lectures and have redone my code a few times but just can't figure it ...
0
votes
0
answers
31
views
Pset5 speller memory still reachable
I am having a lot of issues with memory being still reachable. I've used help50 and valgrind but can't quite understand what I have going on so I'm just going to post my whole code I have.
// ...
0
votes
1
answer
21
views
pset5 speller Hash table not appearing in the debug50 stack/heap
This question is related with this other question of mine, in which I am trying to complete pset5: speller.
I took Cliff's advice, and additionally executed the debug50 on my code. Since the original ...
- 9
0
votes
1
answer
40
views
pset5 speller memory errors with valgrind
i've been working in pset5 and cannot make it work. I've read some similar questions and made some improvements to my code, but still can't figure what is wrong. Any tips are welcomed!
Here is my code:...
- 9
0
votes
1
answer
7k
views
PSET5 compiles but gives: "free(): double free detected in tcache 2" error on testing
Been scratching my head at this for a while now. I use FREE() only once in the program, and don't know why I get this error. Any help is appreciated :-)
// Implements a dictionary's functionality
#...
- 23
0
votes
1
answer
34
views
PSET5 Why Speller can't load dictionary? (included HASH function in case it's relevant)
// Load function
bool load(const char *dictionary)
{
char word[LENGTH + 1];
FILE *file = fopen("dictionary", "r");
if (file == NULL)
{
printf(&...
- 23
0
votes
1
answer
36
views
Speller not handling substrings properly
All tests seem to pass okay apart from the substrings test.The results of this test are :
:( handles substrings properly expected "MISSPELLED WOR...", not "MISSPELLED WOR..." Log ...
- 3
0
votes
1
answer
45
views
Help with check function (PSET5)
My check function is counting the right amount of words in dictionary and text, but it outputs words that are not misspelled.
Here are all the functions of the problem, the arrays are used to locate ...
0
votes
0
answers
23
views
Need help with check function, speller problem
When the program reaches this line of code: if (strcasecmp(seguido->word, word) == 0). It does nothing, it doesn't have an output or continues to the next iteration.
Here are all the functions of ...
1
vote
1
answer
54
views
Pset 5, Speller, What are the issues in my code(Check or load issues?)?
// Implements a dictionary's functionality
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include<strings.h>
#include<stdlib.h>
#include <ctype.h>
#...
0
votes
1
answer
37
views
Speller still isn't running correctly
I rectified the earlier error in my code (putting dictionary within inverted commas). I also corrected my error in unload where the function would always return false instead of true. However, I ...
- 25
0
votes
1
answer
46
views
pset5 - speller "double free detected" when I run check 50 but program does nothing during self tests
I am currently doing Speller. I have written all the functions and the program compiles but during self testing it is printing "misspelled words" and stays stuck at a blinking cursor. It ...
- 17
0
votes
1
answer
33
views
pset5 unload + valgrind
I tried to solve problem with memory usage but did not figure out where is the problem.
Dictionary unloads successfully but still issue with memory access exists.
I think that problem with ...
- 42
0
votes
1
answer
30
views
Getting a segmentation fault on cs50's speller (pset5)
I would love a bit of help on cs50's pset5 speller. The program does compile. However, when I run valgrind ./speller texts/cat.txt I get a segmentation fault . I think I am overlooking something but I ...
- 25
0
votes
2
answers
24
views
Pset5 CHECK cursor returns NULL erroneously
I keep getting most, if not all, of the words in the text returned as misspelled. I tried debug50 with the small dictionary and cat text and found that the cursor in CHECK always returned NULL, so the ...
- 14
0
votes
1
answer
39
views
problems in unload function-pset5
// Implements a dictionary's functionality
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#...
0
votes
1
answer
47
views
dictionary.c - pset5 segmentation fault
// Implements a dictionary`'s functionality
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
...
0
votes
1
answer
55
views
Problem Set 5 - Segmentation Fault
I am trying to overcome the segmentation fault on the following code, and I couldn't manage to solve the error. Segmentation fault occurs in the load() function, and after hours of debugging, I couldn'...
0
votes
0
answers
27
views
CS50 Speller: valgrind test says that bytes are still reachable in 3 blocks
I'm currently at the CS50's pset5, and am working on the "Speller" problem. I managed to do all functions and don't have any compile or runtime errors. When using check50, though, I receive ...
0
votes
0
answers
181
views
pset5 ; inheritance ; memory leakage
I have successfully completed the inheritance.c script, but there is something I do not understand, if anyone would be willing to help.
inside free_family function,
when handling the base case:
if (p-&...
- 3
0
votes
0
answers
25
views
My program is showing Segmentation Fault
I am working on pset5 speller. When I am running my program it is showing segmentation fault. And I am not quite sure why. Please look into it.
here is my code:
// Implements a dictionary's ...
0
votes
1
answer
60
views
Where am I making a mistake?
I am solving problem set5, speller.
My program is compiling correctly, but I am not sure exactly what the output is supposed to be.
My program is not even getting approved from the check50.
Here is ...
0
votes
1
answer
33
views
pset5 speller all words are spelled wrong
new error: most words are seen as spelling error
Here's my full code: (UPDATED)
// Implements a dictionary's functionality
#include <stdbool.h>
#include <string.h>
#include <stdio.h>...
- 15
0
votes
1
answer
27
views
Pset 5 Speller Load Function Segmentation fault
When I run my load function there is a segmentation fault. It comes at line 80 in my code node* n = malloc(sizeof(node));. I am unsure of how to fix this error. Moreover, I changed my code many times ...
0
votes
1
answer
25
views
Unload function pset5
I've completed the pset5 and got all the check50 marks correct, except the valgrind one. What is weird is that Valgrind also say that i've freed everything correctly. Here is the error message that I ...
- 13
0
votes
1
answer
35
views
70-90 Extra Misspellings - Any ideas?
I did ask this on Ed Forums so my apologies if you're sick of seeing it - but I'm still so stuck!!!
I get almost the right number of misspelled words on whatever text I use but it's off by the first ...
- 3
1
vote
1
answer
36
views
Speller - unload is giving me 1000000 errors in valgrind
so I don't know what I should do with my unload function to make it work properly? Because valgrind isn't happy at all and it's giving 1000000 errors (literally). The load function works perfectly (I ...
- 129