Questions tagged [load]
the first part of pset5, loading a dictionary into memory
419
questions
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Pset5 Speller - trying to understand more about segmentation fault
I tested a piece of code to figure out what's causing the segmentation fault with the 'load' function. The code below opens the large dictionary. Then it scans and prints each string inside the ...
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1
answer
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Pset 5 Speller fscanf returning 0
for Pset5 speller my code for load along with the generation of hash codes leads to a segmentation fault. I realized it is because fscanf returns 0 after the last word of the dictionary, leading to -...
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1
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PSET5 Speller seg fault
I keep having segmentation fault in Pset5 Speller.
I used debugger to find the line where seg fault happens,
and it was "table[k] = n;" in function load.
I don't really understand. Could ...
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0
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86
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first order logic sentence
Consider, in first-order logic, the following predicate symbols. Student(x) represents the predicate that "x is a student." Course(x) represents the predicate that "x is a course." ...
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37
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segmentation fault from pointers
i keep getting segmentation fault when running this code. using printf i can see its from loading ala and the hashtable to store this is set to nil. other words when the hashtable to store them is nil ...
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1
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55
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PSET5 - 3 conceptual questions (debug not needed)
Question 1 (hash) – is it even remotely possible to reverse engineer the hash function when given lots of output?
For example if the underlying hash function is something simple like tolower(word[0]) %...
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2
answers
26
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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 ...
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45
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Speller - Doesn't work properly
I can't seem to fix this code by myself. I'm sure the main issue is in the load function, but I've changed it many times and the best I could get is a few misspelled words. I haven't even changed the ...
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51
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Speller perfomance question
I've completed speller and passed all checks. But I'm still bugged about the performance. I did my best with research and running tests, but my implementation is slower by 10-20% compared to staff's ...
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Pset5 Speller and the point of malloc
I'm having a really hard time understanding why we use malloc to get memory instead of just using the regular int n = 0; way. Typically when we want to make an int, we type int n; not int* n = malloc(...
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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 ...
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20
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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:
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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 ...
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1
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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(&...
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1
answer
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pset4 CS50 IDE broken when opened card.raw
While I was working on pset4/recover I couldn't make it work as desired, so I wanted to check the first few bytes of card.raw manually. I double-clicked the file and now my cs50 IDE never loads and ...
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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 ...
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1
answer
104
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Speller code doesn't handle apostrophes and substrings properly
this is my code: https://pastebin.com/hJfQH6Vb
Any help is appreciated.
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1
answer
114
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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
87
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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'...
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1
answer
81
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Speller skips first word in dictionary
After chasing down and eliminating memory leaks, I think I am getting close to finishing speller. So far, valgrind says no memory leaks, and the output is formatted correctly. However, when running my ...
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1
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PSET 5 Load Function woes
Back with more questions about my code.
1) fscanf: When using fscanf do we need to iterate through what it is writing to the buffer to check for the null signifier so we can jump in and strcpy that ...
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2
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138
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PSET5 Speller Load function skips the words from the dictionary
Struggling with the load function in speller for second week now. What I found using debug50 and placing "printf" between different lines of code is that the fscanf reads every second word ...
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1
answer
31
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Pset5 - Speller - Seg fault
I'm getting a segmentation fault when running this. Valgrind reports no errors, but a leak of 1,080 bytes at two blocks, with 5 allocs and only 3 free'd. Below is my load function and below that are ...
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2
answers
208
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Pset5 - Speller - Valgrind error for malloc in load function
I get all test results correct except the Valgrind error as follows, does anyone know why is it so and share some insights please? thanks!
running valgrind --show-leak-kinds=all --xml=yes --xml-file=/...
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105
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Pset 5 speller load function and word
I'm working on my load function to obtain the "word" from dictionary and I obtain one of the next message
dictionary.c:59:28: error: use of undeclared identifier 'word'; did you mean 'load'?
...
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1
answer
92
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PSET5/Speller - Valgrind error: conditional jump, relates to table[i] array, but I've already initialized that (or have I?)?
I posted something similar a couple of days ago but have made progress since then. Specifically I found a couple of posts answered by Cliff B indicating the problem users had was that they hadn't ...
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2
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64
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Segmentation Fault on Speller's Load function
bool load(const char *dictionary)
{
FILE *dict = fopen(dictionary, "r");
if (dict == NULL)
{
return false;
}
char word[LENGTH + 1];
while (fscanf(dict, "%s&...
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1
answer
48
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Pset5 Speller Valgrind error trouble
Baby programmer over here. Before moving on to the (check) function, I wanted to make sure the (load) function was correct.
After performing Valgrind, I received the following errors. Up to this point,...
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1
answer
52
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Word array sometimes filled with weird values - Speller
My code looks like this: (ignore the comments; they're old)
// Implements a dictionary's functionality
#include <stdbool.h>
#include <string.h>
#include "dictionary.h"
#include &...
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votes
1
answer
46
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Pset5: check returns hashtable pointers as NULL despite hashtable values printed correctly in load
My check function returns all hashtable indexes as NULL (I printed a known index of 124 and still returns NULL), despite all indexes printed correctly in load. I am not sure where exactly the problem ...
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28
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trouble loading dictionary
my load function seems to only load two words and all words are coming back misspelled. I don't know if the problem is with my load function or the hash function. I've gone over the load function ...
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1
answer
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My load function is licking memory
the program complies properly but when i use valgrind shows am leaking memory when I open the file in the FILE *file = fopen(dictionary, "r");
bool load(const char *dictionary)
{
// TODO
...
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22
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Pset5: Problem with loading multiple words with the same hash number
I am having problems with loading multiple words with the same hash code. The hash function I chose, from what I can understand, takes the ascii codes of all of the words in the dictionary, and ...
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votes
1
answer
31
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cs50 Speller Question
I am currently working on the load function in Speller. When I run it with a file, most of the words are mispelled, leading me to believe that initializing my list works correctly, until it adds ...
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1
answer
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Speller pset 5: Valgrind gives me error
I am doing pset 5 speller and It seems to be okey less valgrind check.
Valgrind HELP50 gives me these errors
==22585== Use of uninitialised value of size 8
==22585== at 0x40110B: hash (dictionary.c:...
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1
answer
129
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PSET 5 Speller - Unload leaking a ton of memory
I've been trying to read other questions on stack exchange about it and do research on it but I really couldn't find a solution for my unload problem. It doesn't seem to unload much. I tried a lot of ...
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0
answers
55
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PSET5 dictionaries won't load
I cannot get my dictionaries to load and cannot figure out why. Here is my load function:
// Loads dictionary into memory, returning true if successful else false
bool load(const char *dictionary)
{
...
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1
answer
199
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Pset5: Speller. incorrect counting of mispelled words
I've been working on this code for the last two weeks... I load the correct # of words into the dictionary, but I get an incorrect number for misspelled words. I believe its an issue either with my ...
0
votes
1
answer
102
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Speller week 5 Segmentation fault
I can't understand where and what my error is
I think it's because of "load", but I can't fix it
it returns an error when checking
:) dictionary.c, dictionary.h, and Makefile exist
:) ...
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3
answers
425
views
PSET 5 Hash help
I started my load function without looking at any reference code (first time starting a pset this way) to give me an idea on how to implement my own version. I was mostly confident until I reached the ...
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1
answer
54
views
Pset5 segmentation fault due to sprintf
// Loads dictionary into memory, returning true if successful else false
bool load(const char *dictionary)
{
int i;
for (i = 0; i < 5382; i++)
{
table[i] = NULL;
}
int ...
0
votes
2
answers
216
views
strcpy not working with struct items
bool load(const char *dictionary)
{
char splitStrings[9999][45];
FILE* dict = fopen(dictionary, "r");
node* item = table[0];
int i = 0;
for (i = 0; fscanf(dict, "%...
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pset5 speller, passes all Check50 requirements except the last one (Valgrind)
My code is now working fine but misses out on fully completing Check50 because of the last requirement. Running ~/pset5/speller/ $ help50 valgrind ./speller texts/cat.txt, it returns:
==6259== ...
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1
answer
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PSet5 Speller, Load Function, help50 Valgrind returns "==2480== Conditional jump or move depends on uninitialised value(s)" at the strcpy line
I've been working on Speller for a while now, but I've been stuck on this same problem. When testing my code by running ./speller texts/ANYOFTHETEXTS, it says I load 143092 words, but it also always ...
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votes
1
answer
59
views
Speller.c doesn't work
I've spent pretty much time trying to solve a speller and got really stuck, don't know what's wrong with my code. It compiles but check50 says it's totally incorrect. I would be grateful if you could ...
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1
answer
39
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PSET 5 segmentation fault on checker
I figured out that the problem is the checker. The output of this code is a segmentation fault. I think I followed everything on the walkthrough. Here is the result that I got: the result of the code. ...
0
votes
1
answer
478
views
CS50 Speller Load function
I looked through my load function with debug50 and realised that each time the loop is iterated, the pointer temp always gets assigned the same value despite freeing it, how do Igo about resolving ...
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2
answers
45
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PSET5 - Valgrind error - no enough bytes are being freed
I've been on this pset for some time now and everythin seems to be working except that there are some memory leaks and I really can't understand why. I've checked a lot of other people's codes but I ...
0
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1
answer
66
views
Speller Load doesn't see certain words
My load function sometimes overlooks certain words in the dictionary. For example it jumps over the word "nodes" instead of loading it into the hash table.
bool load(const char *dictionary)
{
// ...
0
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2
answers
68
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load function in speller not working properly not seem to figure out the correct way to link hastable?
Implements a dictionary's functionality
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <strings.h>
#...
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