Questions tagged [substitution]

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pset 2, SUBSTITUTION, working according to specs EXCEPT for UPPER LOWER case spec, code review request

Could anyone please review my code? Specifically the last lines, concerning the case assignment. I got all the other specs to work, except for that last part. I can't figure out what is it that I've ...
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PSET2 SUBSTITUTION works fine ONLY if plaintext is UNDER 9 CHAR

I was approaching the end of the substitution problem of PSET2 when I hit a snag I could not solve. I have already written the code to check the key for the various conditions they provide. My problem ...
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pset2, problem SUBSTITUTION, Is there more than 1 way to check for repeated characters in the 26-character key?

I have a question concerning pset2, SUBSTITUTION. I finalized the 3 initial filters of this problem: character count argument count non-alphabetical characters. now I'm moving to the fourth ...
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PSET2 Substitution: Trouble only in encrypts all alphabetic characters using DWUSXNPQKEGCZFJBTLYROHIAVM as key

so this is my code. All problems are compiled successfully except this one. The output is "Segmentation fault" this is my code: #include <stdio.h> #include <cs50.h> #include <...
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error: address of stack memory associated with local variable

I have the following function: string encipher( string plaintext, string key) { int size = strlen(plaintext); char ciphertext[size]; // For each alphabetic charaters determine what letter ...
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Char repetition in key

I 'm trying to avoid char repetition in key // making chars array of alphabets string alph = "abcdefghijklmnopqrstuvwxyz"; //making sure that there is no character repitition char rep[26] = ...
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Segmentation error on pset2 substitution

I'm trying to work on "substitution" problem set, but I'm getting an error of "Segmentation Fault" when I run the program below: In this part of the program I just want to check if ...
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cs50 pset2 substitution Segmentation error

I am stuck at working out what is wrong with my code. I receive the values entered at the command line, I ask the user for text, I validate the command line values as characters of the alphabet and ...
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Pset2 Substitution My code working when I use debugger and does not working thorough console or test. What am I doing wrong?

Sorry for my English( I am learning. 1.I have make this code, but when I have wrote "isduplicate" function it makes uncatchable bug. Code work as my expectetion only in debugger. So where is ...
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Substitution Just can't handle invalid keys

My code - #include <stdio.h> #include <cs50.h> #include <stdlib.h> #include <ctype.h> #include <string.h> bool check_distinct_char(string s); bool check_char(string s); ...
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pset2 substitution unable to identify string which has character repetition

Here is my code- #include <stdio.h> #include <cs50.h> #include <stdlib.h> #include <ctype.h> #include <string.h> bool check_distinct_char(string s); bool check_char(...
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pset2 substitution checking if all the characters in the key are different

I have almost finished substitution. Just that I have not yet been able to come up with a elegant way to check if all the characters in the key are distinct hence I used the following way to check if ...
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PSet2 / Substitution

I am trying to make an upper case key and a lower case key of the one typed by the user but when I use the toupper and tolower functions they turn all my chars into lower or upper. Not just the one I ...
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incompatible pointer types passing 'string' (aka 'char *') to parameter of type 'string *' (aka 'char **')

Im writing a funtion that takes string as a argument and gives back a integer. This function counts lenght of a string entered at the command line argument. I get an error :" incompatible pointer ...
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Check50 Substitution error

I am able to execute the code with any errors. The solution(output) to the examples given in the problem set 2 match my solution and yet check50 shows there are a number of issues in the output. ...
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CS50 - PSET2 - Substitution Segmentation fault

I keep getting 'Segmentation fault' every time I run the code(mentioned below). The code is compiling just fine. It's asking for input and is returning required message when the command line argument ...
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CS50x pset2 substitution, check50 test returns negative even though output is correct

My code fails only one of the test in check50 even though the output is correct and passes other ones. The test it fails: :( encrypts all alphabetic characters using DWUSXNPQKEGCZFJBTLYROHIAVM as key ...
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pset2 substitution not working

im kinda stuck with pset2, substitution. Any help is appreciated. When trying to convert the plaintext into the ciphertext, the formula just doesnt do anything. I suppose there is something wrong ...
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Segmentation fault in Substitution - Problem Set 2

I have finally finished writing my code for the Substitution question in Problem Set 2, but Check50 tells me that my code has a segmentation fault when there is a lack of key. My code is as follows: #...
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How to reject repeated letters for Substitution in Problem Set 2

I am trying to write some code for the Substitution question in Problem Set 2, but I cannot figure out how to reject the case where a user gives a key with repeated letters. My code thus far is as ...
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Pset2 - Substitution - "Output not valid ASCII text" error despite correct cipher output

after running check50 I am getting an "output not valid ASCII text" error for the following problems: :( encrypts "A" as "Z" using ZYXWVUTSRQPONMLKJIHGFEDCBA as key output not valid ASCII text :...
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[Week 2 Substitution.Why does my code fail the checks even if the output is correct?

Here is my code. Apologies if it is hard to understand / messy. When I check50 it shows this. I have a brief idea on how to solve the invalid characters in key but I don't mind some help on that too. ...
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pset2 substitution - isalpha doesn't seem to recognize letters

I'm relatively inexperienced at programming, but I thought I understood how to use command-line prompts well enough to try the substitution problem. I'm having an issue with isalpha that I don't ...
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PS2 substitution

I am trying to check that the substitution key contains all the alphabets but am getting error: expression result unused for this line of code: s, l ++; Can anyone help, this is my code as of now: ...
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hi, i tried to solve problem set 2 substitution. it gives right output but check50 is giving errors

include include include include include int main(int argc, string argv[]) { if (argc != 2) { printf("Usage: ./caesar key\n"); return 1; } int k = strlen(argv[1]); ...
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pset 2-substitution-error handles multiple duplicate characters in key timed out while waiting for program to exit

Im working on substitution from pest 2 and I'm getting everything approved except for the last message: handles multiple duplicate characters in key timed out while waiting for program to exit Below ...
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During PSET 2: Substitution, I got an expected expression error for get_string. Please help

substitution.c:24:23: error: expected expression char* plaintext = get_string(); ^ /usr/include/cs50.h:109:53: note: expanded from macro 'get_string' #define get_string(...) ...
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Pset 2 - Substitution - Error - handles multiple duplicate characters in key

I have finished the substitution pset2 problem, however, there was one error when I submitted my assignment. The description of this error was handles multiple duplicate characters in key. timed out ...
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1 answer
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PSET2 Substitution - Output seemingly correct, fails check50 (null character?)

thank you for your help in advance! I can't wrap my head around what's wrong with my code as the output is (seemingly) correct. I suspect it has something to do with the null character. #include <...
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Get help in Pset2 Substitution

The Errors- :) substitution.c exists :) substitution.c compiles :( encrypts "A" as "Z" using ZYXWVUTSRQPONMLKJIHGFEDCBA as key output not valid ASCII text :...
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