Cs50 Questions

I can't seem to understand what is the problem with my program. the assignment is cs50's "substitution" from problem set of week 2. the

When running my program through cs50's submit50 check, everything works besides validating 4222222222222 as visa

I have a problem with this code as i can't seem to find the problem? here is the problem that i tried to solve: - declare and write a function

Question updated: in cs50's filter.c image is defined as rgbtriple(*image)[width] = calloc(height, width *

I'm working on cs50 pset5 speller, and in the lecture they introduce a new thing called nodes. what is a node? i didn't really understand what

My code compiled correctly and i passed every test case except one. the bug occurs in the sentence- "in my younger and more

What i am trying to ask is when you are coding a cipher and you are asking for user input. how would you go about changing the characters in the

I'm working through cs50 and am currently working on a small function to determine the winner(s) of an election. void

I'm trying to deal with the vote function and there are 2 questions i'd like to seek for your help: in the vote function definition,

Very new to programming in c so sorry if i have badly misunderstood something. i am currently doing the speller problem set from cs50 if anyone is

I am trying to write a program that will recover deleted images from a file and write each of those images to their own seperate files. i've been

For the cs50x problem caesar i have created a program that encrypts messages using caesar’s cipher. for this, the program must recognize

I am currently doing cs50 introduction to computer science: i started this code (written in c) where i have to code a pyramid based on what the

I attempted the next requested filter and again had issues. the code compiles for once but when running the program in sepia it gives me an error

I'm working on the recover program of the cs50 course. here are the instructions: implement your program in a file

I'm working on the recover assignment of pset4 cs50, and i think i finished my code. but when i run it, it says: file cannot be opened. if i try

I have written the function to reflect an images that were provided in the zip file as .bmps. upon some research, i've seen that many

I'm working on cs50 pset4 recover, and it's going pretty well. but when i made the if statement that checks if that file is a jpeg, clang started

I just completed the cs50 pset 5

My speller program is working perfectly fine except for a memory leak that i can't seem to wrap my head around. i have already satisfied every

My cs50 speller function finally works, but when entering it into check50, it says there is a memory error with valgrind. here is my unload

I'm working on cs50 pset4 filter(less comfortable)grayscale and i have to round the numbers if they are decimals. but for some reason, check50

I'm working on the cs50 pset4 exercise filter, and i finished the grayscale filter and the sepia filter, and now i'm on the reflect filter. i'm

I'm working on a cs50 program called filter(less comfortable, week 4), and it has to transfer images from normal to sepia. it's working fine

what am i trying to do? i am trying to solve the

I'm a little stuck on part of a cs50 encryption exercise where we have to implement a program that encrypts messages using caesar’s cipher, in

I can compile this code with no issues, the idea right now is just to test that i can successfully enter the cipher key(command line argument)

I am working on an exercise in cs50 pset2 readability, and i'm trying to count up how many sentences there are in a text. so far my code is

Here are the instructions of an exercise that i have to solve for cs50 pset2 readability(copy pasted from the site): your program

I'm trying to replace the jth value of the function's input string to '0' whenever the ith value of

I'm extremely new to cs and thought i would turn to the community for help. i've been stuck on the blur function of the filter (less) pset for 6+

I've seen the operator ! being used in multiple places differently and i still don't get how it actually works. my basic

I am hoping someone can help me. i am having a really hard time with the box blur problem in pset4. i am trying to simplify the concept so i can

I have this error code: helpers.c:56:13: warning: implicit declaration of function 'swap' is invalid in c99

I have the following error code popping up: in file included from filter.c:5: ./helpers.h:16:27: error: use of

Iam trying to implement luhn's algorithm in the c language to check credit card validity, for those who don't know... this is

1- i don't know what's wrong with my code, this is ## help ## readability cs50 pset2. 2- the problem seems to be in float grade

This is my code so far, for the caesar problem

I'm building a program for the problem set 1 of cs50x called "cash" that is written in c. i don't know how to make the function

I'm running the following code void blur(int height, int width, rgbtriple image[height][width]) { for (int i = 0; i <

I was doing the cs50 pset 2 - substitution, where we have to encrypt the plaintext using the key given by the user in the command line,

So my code for my caesar programming is shifting the letters with the key just fine, but it is not keeping the spaces or puncuation. for example,

I am really stuck here. the programm gives right answer to invald credit card numbers but never say if its visa, amex or mastercard. i need

I'm new to stackoverflow and pretty new to programming. i'm working on the tideman problem for the cs50 course.

I'm trying to solve this cs50 problem titled credit and i'm new to coding so i really appreciate if you'll help me find what i typed wrong here.

I'm trying to encrypt a input from the user (variable text) by a cyphertext with a given key (variable argv[1]). where a is replaced by the first

#include <cs50.h> #include <stdio.h> #include <string.h> #include <stdlib.h> typedef struct { int votes; }

#include<stdio.h> #include <cs50.h> #include <string.h> #include <stdlib.h> #include <ctype.h> int main(int

I am writing the mean blur filter for the filter task in cs50 (more comfortable version). when i tested it with some my pictures, it seemed to

How the "candidate" stuct is indexed in the following code? when i try to print the last member(last index?) of the created

Info about this task when i try to implement

In my program i get the errors that i controlled, but when i try to avoid those preset errors and enter what i want the user to enter, it returns

#include <stdio.h> #include <cs50.h> #include <string.h> #include <ctype.h> int count_letters(string

The following code i have written has the purpose of detecting the edges in a pixel using the sobel operator. however, it fails all of the tests

I am currently doing the cs50 web programing course an am trying out some of the examples from lecture 5. running the example with flask it opens

This is the updated final code that i got it to work. i use the get.zoom and center.change to ensure that no matter the view of the

I have been trying to do this problem for at least a week now, and can't seem to understand where is the problem, i already checked everything in

I'm new here. i am trying to do a forever loop with while (true) but can't seem to get it working. i have tried iterations without

In my postgres database, i have made a table books. inside books, i have 5 columns - id, title,

I am trying to get a query into a variable called results, in which i query the database to find the books with a title like the input from the

Updated: i realize that in c i initialized the word counter 1. (i've tried to delete the inquiry but i was not allowed) :/ in order to try

I cant seem to figure out why this error keep happening. i'm fairly new to coding and this program is supposed to blur an image using box blur but

I have been trying to write a c program where the user inputs a command-line argument and the program checks if it is all number digits or not. if

I know it is not correct implementation for print_winner function (printf should be inside the if statment). however, i cannot figure out why

I am trying to implement a program for problem set 2 of cs50. my program must accept a single command-line argument and the key itself

I'm new to coding and started my journey about a month ago. i just completed problem set 4 for cs50 but wanted to play around a bit with pointers.

I'm trying to create a program that accepts cmd line arguments to encipher a plaintext! the program must accept one cmd line argument after its

I have the following code: void record_preferences(int ranks[]){ // update preferences given one

For a course i'm taking i'm supposed to create a program that creates a simple ciphertext from plaintext using a key that the user inputs as a

When i type an text, like: "the quick brown fox.", as an input, the debugger shows the value from the variable text is: 0x603270

I am working on a photo extraction program for a course i am taking. for this program, argv[1] is the name of the file from which i want to

I am working on a code in which i shift each letter by one place, so (a) becomes (b) and (b) becomes (c) and so on. so far i managed to do that,

#include <stdio.h> #include <cs50.h> #include <math.h> int main(void) { long

I just started the cs50 course given by harvard. i am currently working on the problem set 1 which is to validate a credit card number. how come

I am doing cs50 harvard university online and i'm on week 3 but while watching the video i noticed that i iterations and loops seem the same, as

I'm always getting "control may reach end of non-void function" on the boolean function when compiling the code and don't know what's

I'm solving a coding problem currently. i must encipher a code and change words into other encoded words. i know i can check and print each

I'm just starting to code and i need help figuring out why this loop counts spaces within a string. to my understanding, this code should

I've run my program through check50 and get the following output: :) dictionary.c, dictionary.h, and makefile exist :) speller

I am trying to code a program that count the number of letters, words, and sentences in a text. i may assume that a letter is any lowercase

My program can correctly encrypt lowercase letters, but for uppercase the output will double-type characters. for example, if i put the input in

I am working on cs50 coding exercise but i don't get strings and chars. i have problems with them cause i can't understand what they are. i don't

I am still new to programming and very very new to c programming, so please pardon me if my question seems ridiculous. i am learning about

I am trying to create a function by which i can check if the data entered match a triangle or not. i managed to do the function, but i am having a

I am having some problems with pset 5 of the cs50 course. this is the speller problem. my code segfaults when i try to load the small

I am a noob so please forgive me for being dumb... basically, say the key is 26 characters, composed of the letters of the alphabet with no

So i started learning c last week and i'm trying to write a very simple program that prints a pyramid of # characters depending on user input

I'm working on the second homework caesar of cs50. it seems most of my review is correct except the last one. i cannot handle the situation of

// implements a dictionary's functionality #include <stdbool.h> #include <stdio.h> #include <strings.h> #include

I'm trying to run check50, but it says i have a memory leak issue. i ran help50 valgrind ./speller texts/cat.txt , and it says:

I'm trying to develop a cipher program that alters someones text input according to a string of 26 char's they can customise. the route i've

I'm new to c and i'm doing cs50. i can't get my code to work. i'm almost positive the for statement is correct. the sum given by the for statement

I'm writing a program that spell checks words, but my hash function is not returning the same number for the same words. my question is how

I am using the for loop to add one to each character in a string and print them out but when printing them each letter is formed on a new line, i

I'm working on recover and am wondering if there's

I'm working on cs50's pset 5, speller. i need a hash function for a hash table that will efficiently store all of the words on the dictionary

String plaintext = get_string("plaintext;"); for (size_t k = 0; k<strlen(plaintext); k++) { int n = atoi(argv[1]);

In caesar (cs50) it says that i need to convert an ascii character to alphabetical index in one of the steps. what does that mean? i saw a video

I'm fairly new to coding. i'm having trouble with my "countsentences" function. i compare the string to "." , "?" ,

I am trying to write this code: #include <stdio.h> #include <cs50.h> #include <math.h> int main(void) {