Questions tagged [cipher-pset2]

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Pset2 Caesar: extra letter printed at the end of ciphertext

I have test many cases and most of them are fine except the following one: ~/workspace/pset2/caesar/ $ ./caesar 2 plaintext: I love tea ciphertext: K nqxg vgcB Where does the extra letter "B" come ...
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1answer
33 views

I'm stuck at PSet 2 Caesar Cipher: The alphabets don't follow my modulo 26. It goes beyond it, printing non-alphabetic characters

The crux is at the last part where I've commented "CONVERT PLAINTEXT TO CIPHERTEXT" The variable asciiValue holds the, well, the asciiValue of the enciphered character. As you can see, I've ...
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88 views

Caesar - Problem set 2 - incorrect output

include // isalpha, isupper, islower - functions needed for caesar --- c = (p + k) %26 include // Check program is ran with only 1 command line arg. Check to make sure all characters are digits. ...
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949 views

pset2//caesar- relational operator result unused error

my code--> #include<stdio.h> #include<cs50.h> #include<string.h> #include<ctype.h> #include<stdlib.h> int main(int argc, string argv[]) { if(argc!=2) ...
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2answers
39 views

pset2 caesar please help

Can someone please point me in the right direction to correct this code? i am getting blank results when entering a lowercase letter. Thanks! #include <stdio.h> #include <cs50.h> #include ...
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1answer
310 views

pset2 caesar alphabet loop

In light of CS50's plagiarism rules I'll do this in part psuedo code. My question lies within the for loop that iterates through the user's input to translate it into Caesar's cipher. For some reason, ...
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1answer
63 views

Vigenere code still rotates for nonalpha

I've been trying to get my vigenere straight for some time now, managed to get rid of most of the bugs, but all I can see is that it still rotates the code for me even when I have a non-alpha ...
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1answer
31 views

Testing code to validate input using a parenthesis for cs50/pset 2/caesar.c I get error bash: syntax error near unexpected token `)'

Been struggling with this all morning and grateful for any help please! I'm aware that it's not the most elegant code but below weems to work OK with most invalid input that I've thrown at it so far, ...
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0answers
29 views

Caesar (Pset2): When i print out ciphertext, some additional characters, that are not supposed to be part of the array, print out. How do i fix that? [duplicate]

// Receive plaintext string text = get_string("plaintext: "); int t = strlen(text); char ciphertext[t]; //Array assignment for (int i = 0; i < t; i++) { // Plaintext to Ciphertext ...
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1answer
144 views

vigenere pset2 spaces

I'm having issues figuring out how to ignore the spaces in the user string when changing to ciphertext. I thought the isalpha() check accounted for that but I guess not. Any help would be ...
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1answer
47 views

Pset2 Caesar Hail dont know how to encrypt the plaintext

plz help me refine my code thx!! https://raw.githubusercontent.com/check50/davil3388/cs50/2017/fall/caesar/caesar.c?token=Aehv0R6qUjbNWPi_rOMKjS7ChP3tSlW1ks5aSK8MwA%3D%3D
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1answer
40 views

pset2 caesar, I really dont know, its printing the first capital twice?

im stuck now, I cant see it. Its all working and ciphers correctly, but whenever the first index of plaintext is a capital, it seems to print it twice? I have gone through it line by line for ages ...
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1answer
21 views

working with vigenere cipher

below is my vigenere code, it sorts of prints just the first character of the string input and it gets stuck after that for some reason I can seem to figure out. #include <stdio.h> #include <...
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2answers
135 views

pset-2, caesar { key input-help needed}

when i take the command line input (the key) from the user, how do i store it? the argv[1] (this variable will be clear if you read my code )which the user will provide is supposed to be an integer ...
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1answer
25 views

working with vigenere 2

Below is my vigenere code for enciphering text, but the enciphering key does not wraparound. /* a program, vigenere, that encrypts messages using Vigenere’s cipher*/ #include <stdio.h> #...
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0answers
47 views

wrapping around in vigenere cipher

Below is my vigenere code for enciphering text, but the enciphering key does not wraparound. /* a program, vigenere, that encrypts messages using Vigenere’s cipher*/ #include <stdio.h> #...
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1answer
45 views

pset2 letter repetition

For the input: ./caesar 23 !!!!AAAAGGGGG!!!! it prints !!!!XXXXXXXXX!!! So the first letter is repeated :0 So why is that happening, What is the reason of repetition!! ... -btw- code is incomplete....
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1answer
94 views

Problem Set 2: Vigenere's Cipher

I implemented the check50 to check the correctness of my vigenere's cipher program and received the following prompt: :( rejects "Hax0r2" as keyword \ expected output, not a prompt for input What ...
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2answers
86 views

ceasar cs50 algorithm problem

i am having problem in making the final enciphering equation. actually i am confused with this ASCII part. not asking for code . just a helpful understanding of this ASCII part.
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2answers
312 views

Hax0r2 case-vigenere cipher

My program passes all the tests in the check50 except for the case dealing with Hax0r2 input i.e key word containing nonalphabetical characters. Check test results are included below. :) vigenere.c ...